FINGER TENDON SHEATH BRACE CAPABLE OF ADJUSTING FIXING PRESSURE AND KIT THEREOF

Abstract

Provided is a finger tendon sheath brace capable of adjusting fixing pressure, including a brace fixing plate, a compression screw, a compression plate, an adjustable pressure push rod and a spring. The brace fixing plate is configured as a fixing structure for accommodating a finger to extend in the finger tendon sheath brace, and is provided with a threaded opening in a center of the brace fixing plate in a vertical direction perpendicular to the finger. The compression screw is embedded in the threaded opening of the brace fixing plate through threads to make an end of the compression screw slightly higher than the brace fixing plate and a head end of the compression screw pass through the brace fixing plate and enter a cavity for accommodating the finger. The compression plate is connected with a head end of an adjustable pressure push rod inner sleeve.

Claims

1. A finger tendon sheath brace capable of adjusting fixing pressure, comprising a brace fixing plate, a compression screw, a compression plate, an adjustable pressure push rod and a spring; wherein the brace fixing plate is configured as a fixing structure for accommodating a finger to extend in the finger tendon sheath brace, and is provided with a threaded opening in a center of the brace fixing plate in a vertical direction perpendicular to the finger; the compression screw is embedded in the threaded opening of the brace fixing plate through threads to make an end of the compression screw higher than the brace fixing plate and a head end of the compression screw pass through the brace fixing plate and enter a cavity for accommodating the finger; the compression plate is connected with a head end of an adjustable pressure push rod inner sleeve; and the spring is arranged in the compression screw and used for adjusting a pressure applied on the compression plate by the compression screw, so as to fix tendon sheath.

2. The finger tendon sheath brace according to claim 1, wherein a shape of the brace fixing plate is selected from a group consisting of an O-ring, a rectangular ring, and a C-shaped semi-ring with one side open.

3. The finger tendon sheath brace according to claim 1, wherein the compression plate has a narrow strip structure.

4. The finger tendon sheath brace according to claim 1, wherein a lower part of the compression screw is connected with a sleeve structure, the sleeve structure has a layered structure with inner and outer layers and comprises the adjustable pressure push rod inner sleeve and an adjustable pressure push rod outer sleeve; external threads are arranged on the adjustable pressure push rod outer sleeve for matching with the head end of the compression screw; and the adjustable pressure push rod inner sleeve is sleeved inside the adjustable pressure push rod outer sleeve and vertically displaces relative to the adjustable pressure push rod outer sleeve through the spring.

5. The finger tendon sheath brace according to claim 4, wherein the spring is arranged at an end of the adjustable pressure push rod inner sleeve close to the finger or at an end away from the finger in the vertical direction.

6. The finger tendon sheath brace according to claim 1, wherein the compression plate is connected with the adjustable pressure push rod inner sleeve.

7. The finger tendon sheath brace according to claim 1, wherein a skin-friendly soft sponge is attached to one end of the compression plate in direct contact with the finger, and an inner surface of the brace fixing plate is covered with the skin-friendly soft sponge.

8. The finger tendon sheath brace according to claim 5, wherein when the spring is located at the end of the adjustable pressure push rod inner sleeve away from the finger, the adjustable pressure push rod outer sleeve is provided with a transparent spring position display window at a corresponding position of the spring, and a spring display bar is marked on the spring and moves up and down in the spring position display window according to a position of the spring; and an outer side of the spring position display window is provided with scales indicating pressure values of the spring.

9. The finger tendon sheath brace according to claim 8, wherein pressure states inside the finger tendon sheath brace are marked with three scale lines; when pressure in the finger tendon sheath is greater than 100 mmHg, the spring display bar corresponds to a first scale line in the spring position display window; when the pressure in the finger tendon sheath is greater than or equal to 40 mmHg and less than 100 mmHg, the spring display bar corresponds to a second scale line in the spring position display window of the tendon sheath brace; and when the pressure in the finger tendon sheath is less than 40 mmHg, the spring display bar corresponds to a third scale line in the spring position display window of the tendon sheath brace.

10. A kit of a finger tendon sheath brace, comprising a plurality of finger tendon sheath braces according to claim 1, and further comprising link blocks, and retractable anti-dropping strips; wherein the kit is configured to provide tendon sheath fixation for a plurality of finger injuries; and the link blocks connect the multiple finger tendon sheath braces in parallel through link rods.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG. 1 is a main sectional view of a finger tendon sheath brace capable of adjusting fixing pressure according to an embodiment of the present application.

[0038] FIG. 2 is a front view of an outer surface of a compression screw according to one embodiment.

[0039] FIG. 3 is a side view of a finger tendon sheath brace according to one embodiment.

[0040] FIG. 4 is a main sectional view of a finger tendon sheath brace capable of adjusting fixing pressure according to another embodiment of the present application.

[0041] FIG. 5 is a side view of an outer surface of a compression screw according to another embodiment.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] In the following description, many technical details are set forth for readers to better understand this application. However, those skilled in the art may understand that even without these technical details and various changes and modifications based on following embodiments, technical schemes claimed in this application may be realized.

Terms

[0043] As used herein, finger tendon sheath brace capable of adjusting fixing pressure, finger tendon sheath brace, tendon sheath brace and brace are used interchangeably, and all refer to the finger tendon sheath brace capable of adjusting the fixing pressure in this application.

[0044] Some innovations of the embodiments of the present application are briefly described below.

[0045] As shown in FIG. 1, the finger tendon sheath brace capable of adjusting the fixing pressure in the application includes a brace fixing plate 1, a skin-friendly soft sponge 2, a compression plate 3, a compression screw 41, a spring 42, an adjustable pressure push rod inner sleeve 43, an adjustable pressure push rod outer sleeve 44, a spring display bar 45, a spring display window 46 and a spring scale table 47. In an alternative embodiment, as shown in FIG. 4, the brace further includes a multiple finger injury link block 5, an elastic notch 6, a retractable anti-dropping strip 11, and a multiple finger injury link rod 12. The brace fixing plate and the elastic notch 6 form an opening structure for accommodating a finger to enter in. The brace fixing plate is lined with the skin-friendly soft sponge 2 to prevent compression and necrosis of local tissue caused by finger insertion.

[0046] A compression structure is a threaded hollow push rod structure, including the compression plate 3, the compression screw 41, the spring 42, the adjustable pressure push rod inner sleeve 43 and the adjustable pressure push rod outer sleeve 44. The compression plate 3 is located in a center of the brace fixing plate, and is lined with the skin-friendly soft sponge 2 below. The compression plate is a narrow strip structure. On the one hand, the compression plate limits a compression range to the tendon sheath, without compressing surrounding blood vessels and nerves. On the other hand, the compression plate is fixed between interphalangeal joints, and is used together with the retractable anti-dropping strip on a back side of the brace to enhance anti-dropping and anti-rotation of the brace and enhance a fixation performance. A head end of the compression screw 41 passes through and extends into a space in the brace, and the adjustable pressure push rod outer sleeve 44 is connected to the compression screw 41 through threads, and the adjustable pressure push rod inner sleeve 43 is sleeved in the outer sleeve, and one end facing the finger is connected with the compression plate 3. The spring 42 is located in the adjustable pressure push rod outer sleeve 44, and may be arranged at a top end of the inner sleeve 43 or at a bottom (i.e., one end close to the finger) of the inner sleeve 43. The spring adjusts pressure between the compression plate and skin more flexibly, so that skin surface pressure is maintained in a stable range. On the one hand, pressure exerted by the compression screw is similar to pressure exerted by tendon on a pulley. On the other hand, local swelling and further skin necrosis caused by compression on the finger is avoided.

[0047] As shown in FIG. 2, there is a transparent spring position display window 46 in the adjustable pressure push rod outer sleeve 44 parallel to the spring 42. The spring display bar 45 moves in the window, and scales indicating pressure values of the spring are arranged outside the spring position display window. Pressure states inside the finger tendon sheath brace are marked with three scale lines. When a compression limit of the spring is high, the spring display bar moves to a high position, or when a pressure value is greater than a certain value, the spring display bar corresponds to a first scale line in the spring position display window. When the compression limit of the spring is moderate, the spring display bar moves to a middle position of the display window, or when the pressure value is in a certain range, the spring display bar corresponds to a second scale line in the spring position display window of the tendon sheath brace. When the compression limit of the spring is very small, the spring display bar moves to a lower position, or when the pressure in the finger tendon sheath is less than a certain value, the spring display bar corresponds to a third scale line in the spring position display window of the tendon sheath brace.

[0048] In order to make an objective, a technical scheme and advantages of this application clearer, the embodiments of this application will be further described in detail with attached drawings.

Embodiment 1

[0049] One embodiment of the present application is shown in FIG. 1 and FIG. 2. A brace fixing plate is in a shape of a C-shaped opening, including an upper arm, a middle arm and a lower arm. The upper arm and the lower arm are connected by a vertical middle arm. An outer sleeve is in threaded connection with a compression screw through threads distributed on the outer sleeve. A spring is located between the outer sleeve and an inner sleeve, and at one end of the inner sleeve away from a finger. The finger is put between a compression plate and a brace fixing plate 1, and a compression screw 41 is tightened to a moderate tightness to complete fixation of finger tendon sheath. It is best to make a spring display bar 45 at a low scale during tightening, so as to allow tendon to slide in the tendon sheath, and meanwhile to avoid that soft tissue pressure is too large to compress blood vessels during movement to a specific position, which may affect blood supply of a limb and further lead to skin necrosis. After the tightening, a retractable anti-dropping strip 11 is opened and is fixed together with the compression plate through a strap to prevent the brace from rotating and dropping.

[0050] As shown in FIG. 2, spring scales outside a display window are divided into three scale lines, from top to bottom, a third scale line, a second scale line and a first scale line. When pressure inside the brace is large and compression deformation of the spring is serious, a display bar points to a first scale line in the spring position display window. However, when the pressure inside the brace is not large and the compression deformation of the spring is less, the display bar points to a third scale line or a second scale line in the spring position display window. For example, when the pressure in a finger tendon sheath brace is greater than 100 mmHg, the spring display bar points to the first scale line in the spring position display window. When the pressure in the finger tendon sheath brace is greater than or equal to 40 mmHg and less than 100 mmHg, the spring display bar points to the second scale line in the spring position display window. When the pressure in the finger tendon sheath brace is less than 40 mmHg, the spring display bar points to the third scale line in the spring position display window.

Modification of Embodiment 1

[0051] A modification of embodiment 1 is shown in FIG. 3. A brace fixing plate is in a shape of a C-shaped opening, including an upper arm, a middle arm and a lower arm. The upper arm and the lower arm are connected by a vertical middle arm. A spring is located at one end of an inner sleeve near a finger, and the end is connected with a compression plate.

Embodiment 2

[0052] Another embodiment of the present application is shown in FIG. 4 and FIG. 5. A brace fixing plate is O-shaped, and includes a notch on a side for a finger to extend in. An outer sleeve is in threaded connection with a compression screw through threads distributed on the outer sleeve. A spring is located between the outer sleeve and an inner sleeve, and at one end of the inner sleeve away from the finger. The finger is put between a compression plate and a brace fixing plate 1, and a compression screw 41 is tighten to a moderate tightness to complete fixation of finger tendon sheath. It is best to make a spring display bar 45 at a low scale during tightening, so as to allow tendon to slide in the tendon sheath, and meanwhile to avoid that soft tissue pressure is too large to compress blood vessels during movement to a specific position, which may affect blood supply of a limb and further lead to skin necrosis. After the tightening, a retractable anti-dropping strip 11 is opened and is fixed together with the compression plate through a strap to prevent the brace from rotating and dropping.

Modification of Embodiment 2

[0053] A modification of embodiment 2 is shown in FIG. 5. A brace fixing plate is 0-shaped, and includes a notch on a side for a finger to extend in. A spring is located at one end of an inner sleeve near the finger, and the end is connected with a compression plate.

Embodiment 3

[0054] When multiple segments of tendon sheath of a single finger are injured and multiple braces are required for fixation, multiple braces according to the application are connected to form a kit. As shown in FIG. 5, the kit may be connected by installing multiple link rods 12. Installation of hinges depends on rotation and movement of fingers, and rotation centers of interphalangeal joints, that is, transverse stripes of the interphalangeal joints on ventral sides of fingers, should be considered.

[0055] It should be noted that in this application, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, terms comprising, including or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, a method, an article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed or elements inherent to such process, such method, such article or such equipment. Without more restrictions, an element defined by a phrase including one does not exclude that there are other identical elements in the process, the method, the article or the equipment including the element. In this application, if it is mentioned that an act is executed according to a certain element, it means that the act is executed at least according to that element, which includes two cases: the act is executed only according to that element, and the act is executed according to that element and other elements. Expressions such as multiple, multiple times and multiple kinds include 2, 2 times, and 2 kinds and more than 2, more than 2 times or more than 2 kinds.

[0056] This specification includes combinations of various embodiments described herein. A single reference to one embodiment or a specific embodiment, etc., does not necessarily refer to a same embodiment. However, these embodiments are not mutually exclusive unless indicated as mutually exclusive or it is clear to those skilled in the art that they are mutually exclusive. It should be noted that unless the context clearly indicates or requires otherwise, a word or is used in a non-exclusive sense in this specification.

[0057] All documents mentioned in this application are considered to be included in disclosure of this application as a whole, so that they may be used as a basis for revision when necessary. In addition, it should be understood that based on the above disclosure of this application, those skilled in the art may make various changes or modifications to this application, and these equivalent forms also fall within a scope of protection claimed in this application.