Instrument with a detachable motor drive assembly, telescope and cutter tube assembly

Abstract

An instrument with a motor drive assembly detachable from a handle assembly and detachable from a gear assembly, where the gear assembly is inside the handle assembly and further the instrument comprising a standard telescope which is detachable from the instrument and a cutter/blade assembly detachable from an outer sheath. In an aspect, an instrument (1) includes a motor drive assembly (2) that is detachable from a handle assembly (3) and detachable from a gear assembly (5), wherein the gear assembly (5) is positioned inside the handle assembly (3), and wherein the motor drive assembly (2) is detachable for the purpose of being reused after cleaning or its replacement.

Claims

1. An instrument comprising a motor drive assembly that is detachable from a handle assembly and detachable from a gear assembly, wherein the gear assembly is positioned inside the handle assembly, and wherein the motor drive assembly is detachable for the purpose of being reused after cleaning or replacement, wherein the instrument further comprises: a cutter/blade tube assembly, wherein the cutter/blade tube assembly comprises a cutter/blade tube and an outer tube, wherein the outer tube is detachable from the cutter/blade tube, and wherein an at least one square connector of the cutter/blade tube couples with an at least one square cavity of a second gear shaft due to a square profile of the at least one square connector, and the at least one square connector positively engages the at least one square cavity for enabling rotational motion of the cutter/blade tube about an axis of the cutter/blade tube; and a telescope in straight alignment to the cutter/blade tube assembly, said telescope, through actuation of a first button, being detachable for cleaning or being replaced with a new telescope.

2. The instrument as claimed in claim 1, wherein the instrument is an urological morcellator.

3. The instrument as claimed in claim 1, wherein the cutter/blade tube rotates inside the outer tube to shear/cut a tissue between a sharp edge of a cutter/blade part of the cutter/blade tube and a front concave part of the outer tube.

4. The instrument as claimed in claim 1, wherein the gear assembly further comprises any or a combination of a first bevel gear, a second bevel gear, a first spur/helical gear, a second spur/helical gear, a first bearing/bush, a second bearing/bush that is in alignment with a first gear shaft, and a third bearing/bush that holds the second spur/helical gear.

5. The instrument as claimed in claim 4, wherein there is at least one opening in the first bevel gear of the gear assembly inside the handle assembly for engagement with an integrated square connector.

6. The instrument as claimed in claim 1, wherein the motor drive assembly comprises an integrated square connector that is positioned inside a casing of the instrument.

7. The instrument as claimed in claim 1, wherein said instrument further comprises of a second button, which when pressed, enables detachment of an outer sheath completely to enable the cutter/blade tube assembly present inside the outer sheath to get detached.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) FIG. 1 illustrates the top view of the instrument.

(2) FIG. 2 illustrates the bottom view of the instrument.

(3) FIG. 3 illustrates the left hand view of the instrument.

(4) FIG. 4 illustrates the right hand view of the instrument.

(5) FIG. 6 illustrates the sectional view of the instrument along the line A-A displayed in FIG. 5.

(6) FIG. 7, illustrates a button when pressed the outer sheath can be detached which can be removed out completely.

(7) FIG. 8 illustrates cutter/blade tube inside the cutter/blade tube assembly.

(8) FIG. 9 illustrates button for detaching the motor drive assembly present inside the casing from the gear assembly and the handle assembly.

(9) FIG. 10 illustrates a gear assembly inside a gear box casing.

(10) FIG. 12 illustrates a sectional view of the gear assembly along the line B-B shown in FIG. 11.

(11) FIG. 13 illustrates exploded view of handle assembly with cutter/blade tube with at least one second gear shaft that connects with the at least one square connector of cutter/blade tube.

(12) FIG. 14 illustrates the detail view of the gear assembly where the at least one square connector of the cutter/blade tube couples with at least one second gear shaft.

(13) FIG. 15 illustrates a top view of the cutter/blade part of the cutter/blade tube displaying sharp teeth like projections 20 in the central oval region for cutting purpose of the tissue.

(14) FIG. 16 illustrates a front view of the cutter/blade part of the cutter/blade tube displaying a concave region 21 on both top and bottom side.

(15) FIG. 17 illustrates a top view of another embodiment of the cutter/blade part of the cutter/blade tube displaying the sharp edges 22 at the sides.

(16) FIG. 18 illustrates a front view of FIG. 17 of the cutter/blade part with sharp edges on a rectangular area on the cutter part.

DESCRIPTION OF THE INVENTION

(17) FIG. 1 illustrates the top view of the instrument. FIG. 2 illustrates the bottom view of the instrument. FIG. 3 illustrates the left hand view of the instrument. FIG. 4 illustrates the right hand view of the instrument.

(18) FIG. 6 illustrates the sectional view of the instrument along the line A-A displayed in FIG. 5.

(19) As per FIG. 6, the invention discloses a medical instrument 1 which is a morcellator, particularly a urological morcellator, with a motor drive assembly 2 that is detachable from a handle assembly 3 and detachable from a gear assembly 5 for the purpose of reusing or replacing the motor drive assembly.

(20) FIG. 6 illustrates a motor drive assembly 2 with an integrated square connector 4 inside a casing 25 of the instrument giving it mechanical advantage of direct drive leading to lesser mechanical loss. Wire cable can be used instead of gear mechanism.

(21) The purpose of the invention is to provide a motor drive assembly that is detachable from the handle assembly and also detachable from the gear assembly for the purpose of replacing the motor drive assembly with a new motor drive assembly when the motor drive assembly damages due to multiple uses.

(22) Another purpose of the invention is to provide a detachable motor drive assembly from the handle assembly and the gear assembly for the purpose of reusing the motor drive assembly after cleaning and/or sterilizing and/or autoclaving it such that it is clean of all contaminants before use.

(23) As illustrated in FIG. 6 and FIG. 7, a telescope 17 is provided in straight alignment to a cutter/blade tube assembly 19 of the instrument. When a button 23 is rotated the telescope 17 is detachable from the instrument. This telescope is provided in straight alignment to the cutter/blade tube assembly 19.

(24) In another embodiment, the telescope can be in any other angle to the instrument.

(25) The present invention provides a telescope which is in a straight alignment with the cutter tube and that can be detached from the instrument and replaced with a new one. Any standard telescope can be used as a replacement to older one.

(26) The telescope can also be cleaned and/or sterilized and/or autoclaved and reused so that it is clean of all contaminants and also provides a clear vision.

(27) As shown in FIG. 7, when a button 24 is pressed an outer sheath 18 of the instrument can be detached which can be removed out completely. The cutter/blade tube assembly 19 present inside the outer sheath 18c an be detached eventually.

(28) This provides the advantage to detach the blade/cutter tube from the outer tube, replace both or either one with a new one if it wears due to multiple use or to detach the cutter/blade tube and outer tube, clean and/or sterilize and/or autoclave it so that it is clean of all contaminants and/or blood and/or tissue so that it can be reused after sterilizing and/or cleaning and/or autoclaving.

(29) FIG. 8 illustrates a cutter/blade tube 31 inside the cutter/blade tube assembly 19 where the cutter/blade tube 31 rotates inside the outer tube 30 and a tissue shears/cuts between sharp edge of cutter/blade part of the cutter/blade tube 31 and front concave part of an outer tube 30. There is an outer tube support 27. Front concave part of outer tube 30 is shown in detail view 32. Front cutter/blade part of inner cutter/blade tube 31 is shown in detail view 28. Back square part of inner cutter/blade tube 31 is shown in detail view 29. There is a front scope support 26.

(30) FIG. 9 illustrates a button 6 for detaching the motor drive assembly 2 present inside the casing 25 from the gear assembly 5 and the handle assembly 3 (as illustrated in FIG. 06).

(31) The detachable motor drive assembly provides the advantage of replacing the old motor drive assembly with a new motor drive assembly when it gets damaged after multiple uses.

(32) The motor drive assembly after detachment can be cleaned and/or sterilized and/or autoclaved such that it is clean of all the contaminants and can be reused.

(33) The handle assembly and/or the gear assembly can be cleaned and/or sterilized and/or autoclaved and reused such that it is clear of contaminants and/or blood and/or tissue.

(34) FIG. 10 illustrates a gear assembly 5 inside a gear box casing 7.

(35) FIG. 12 illustrates a sectional view of the gear assembly 5 along the line B-B shown in FIG. 11 that is present inside the gear box casing 7 with internal parts comprising of an at least one first bevel gear 8 and an at least one second bevel gear 9, an at least one first spur/helical gear 10 and an at least one second spur/helical gear 11. Any combination of the gear can be used to achieve the motion.

(36) The gear assembly 5 further comprises of at least one first bearing/bush 13 and at least one second bearing/bush 14 in alignment with at least one first gear shaft 15. Further, at least one third bearing/bush 16 holds the second spur/helical gear 11. This motion can also be achieved by worm wheel mechanism.

(37) There is at least one opening 12 in the first bevel gear 8 for integrated square connector 4 engagement. The opening 12 may be square or any other shape.

(38) The integrated square connector 4 (shown in FIG. 6) is connected to an opening 12 in the first bevel gear 8 which can be detached by pressing button 6 to detach the motor drive assembly 2.

(39) In an embodiment, the flexible shaft can be attached to rotate the cutter.

(40) FIG. 13 illustrates an exploded view of handle assembly with cutter/blade tube with at least one second gear shaft 35. There is an outer sheath support 33. At least one square connector 39 of cutter/blade tube, shown in detail view 29 of FIG. 8 couples with an at least one square cavity 38 of second gear shaft 35. At least one fourth bearing 34 connects with the at least one second gear shaft 35 of assembly.

(41) FIG. 14 illustrates the detail view of the gear assembly where the at least one square connector 39 of the cutter/blade tube couples with at least one second gear shaft 35 due to its square profile and positively engages with each other for rotational motion of the cutter/blade tube about its axis.

(42) FIG. 15 illustrates a top view of the cutter/blade part of the cutter/blade tube displaying sharp teeth like projections 20 in the central oval region for cutting purpose of the tissue.

(43) FIG. 16 illustrates a front view of the cutter/blade part of the cutter/blade tube displaying a concave region 21 on both top and bottom side.

(44) FIG. 17 illustrates a top view of another embodiment of the cutter/blade part of the cutter/blade tube displaying the sharp edges 22 at the sides.

(45) FIG. 18 illustrates a front view of FIG. 17 of the cutter/blade part with sharp edges on a rectangular area on the cutter part.

(46) The instrument can be used without limitation in gynecological surgeries, laparoscopic surgeries, hysterectomy surgeries, benign prostatic hyperplasia (BPH) surgeries and other similar such surgeries.