CN213345818U - Handle for surgical tool and surgical tool assembly - Google Patents

Abstract

The present disclosure relates to a handle for a surgical tool and a surgical tool assembly, the handle including a hollow shaft rod, a pressing sleeve, a locking piece, an elastic biasing member, and an elastic returning piece, a connecting end portion of the hollow shaft rod being provided with a slot hole communicating with a central shaft hole of the hollow shaft rod, the locking piece being fitted in the slot hole and being radially movable to switch between a locking position where the locking piece is engaged with a positioning groove of the surgical tool and an unlocking position where the locking piece is disengaged from the positioning groove; the resilient biasing member provides a resilient force of the catch toward the unlocked position; the pressing sleeve can be axially movably sleeved on the hollow shaft rod, when the clamping and stopping piece is contacted with the straight cylinder section, the pressing sleeve keeps the clamping and stopping piece at a locking position, and when the clamping and stopping piece is contacted with the conical cylinder section, the pressing sleeve allows the clamping and stopping piece to move towards and to an unlocking position under the action of the elastic biasing piece; the elastic force provided by the elastic reset piece presses the pressing sleeve to the straight cylinder section to be contacted with the clamping stop piece. The handle is suitable for surgical tools with different positioning groove sizes.

Description

Handle for surgical tool and surgical tool assembly

Technical Field

The present disclosure relates to the field of medical device technology, and in particular, to a handle for a surgical tool and a surgical tool assembly.

Background

The existing surgical tools, such as a screw tap, a drill bit, a bone milling cutter and the like applied to bone surgery, are generally provided with a handle, and although the arrangement mode is simple, the whole surgical instrument is scrapped due to the damage of the surgical tool. In the existing surgical tools with detachable handles, the handle and the surgical tool are generally positioned and locked through steel balls, and the handle is usually only suitable for clamping the surgical tool with a larger positioning groove size.

Therefore, it is desirable to design a handle that can accommodate surgical tools with different positioning slot sizes.

SUMMERY OF THE UTILITY MODEL

It is an object of the present disclosure to provide a handle for a surgical tool that can be adapted for use with surgical tools of different positioning slot sizes.

To achieve the above object, the present disclosure provides a handle for a surgical tool, the handle comprising a hollow shaft, a press sleeve, a catch, a resilient biasing member and a resilient return member, wherein: the hollow shaft includes a connecting end portion for fitting a surgical tool, a slot hole communicating with a central shaft hole of the hollow shaft being opened on an outer peripheral surface of the connecting end portion, the retainer being movably fitted in the slot hole and being movable in a radial direction relative to the hollow shaft to switch between a locking position in which the retainer is located at least partially in the central shaft hole to be engageable with a positioning groove on the surgical tool located in the central shaft hole and an unlocking position in which the retainer is withdrawn from the central shaft hole to be disengaged from the positioning groove; wherein the resilient biasing member is disposed between the hollow shaft and the grip to provide the grip with a resilient force toward the unlocked position; the pressing sleeve is coaxially sleeved on the hollow shaft rod and can axially move relative to the hollow shaft rod, the inner wall of the pressing sleeve is provided with a straight cylinder section and a conical cylinder section which gradually expands along the direction far away from the straight cylinder section, when the clamping and stopping piece is contacted with the straight cylinder section, the pressing sleeve keeps the clamping and stopping piece at the locking position, and when the clamping and stopping piece is contacted with the conical cylinder section, the pressing sleeve allows the clamping and stopping piece to move towards and to the unlocking position under the action of the elastic biasing piece; the elastic reset piece is biased between the hollow shaft rod and the pressing sleeve, and the elastic force provided by the elastic reset piece is used for pressing the pressing sleeve to a position where the straight cylinder section is contacted with the clamping stop piece.

Optionally, the central shaft hole is configured with an insertion fitting section for fitting with an insertion section of the surgical tool, the cross-sectional shape of the insertion section is irregular, and the insertion fitting section is configured with a cross-sectional shape adapted to the insertion section.

Alternatively, the locking piece includes an arc-shaped locking base and an arc-shaped locking portion provided on a side of the locking base facing the central shaft hole, the arc-shaped locking portion being configured with guide slopes opposing each other in the axial direction.

Alternatively, end faces of both ends of the retaining base are connected to the corresponding elastic biasing members respectively through connecting posts extending perpendicularly to the axial direction.

Optionally, the bottom wall of the slot has a receiving hole for receiving the resilient biasing member and the corresponding connecting stud.

Optionally, the elastic reset member is disposed in the central shaft hole, a long bar-shaped hole extending along the axial direction is disposed on an outer peripheral surface of the connecting end portion, a moving pin extends into the central shaft hole through the pressing sleeve and the long bar-shaped hole, and one end of the elastic reset member is biased to the hollow shaft lever and the other end of the elastic reset member is biased to the moving pin.

Optionally, the elongated hole has a first end and a second end opposite to each other, when the moving pin is located at the first end, the elastic force applied by the elastic restoring member to the moving pin is used for pressing the moving pin to the direction of the second end, and the clamping member is contacted with the conical barrel section; when the moving pin is located at the second end, the elastic force applied to the moving pin by the elastic restoring member is used for biasing the moving pin in a direction away from the first end, at the moment, the clamping piece is contacted with the straight cylinder section, and the elastic restoring member and the first end cooperatively keep the position of the moving pin.

Optionally, a flange for operating the pressing sleeve is provided on an outer circumferential surface of the pressing sleeve.

Optionally, the hollow shaft has a fixed end portion opposite the connecting end portion, and the handle comprises a grip member connected to the fixed end portion, wherein the hollow shaft and the grip member are integrally formed, or the hollow shaft and the grip member are detachably connected.

On the basis of the scheme, the present disclosure also provides a surgical tool assembly, which comprises a surgical tool and the handle for the surgical tool, wherein the surgical tool is detachably connected to the connecting end part of the handle.

With the above technical solution, the present disclosure provides a handle for surgical tool, in which a locking piece is movably fitted in a slot hole in an outer peripheral surface of a connecting end portion and is movable in a radial direction relative to a hollow shaft to switch between a locking position and an unlocking position to engage with or disengage from a positioning groove on a surgical tool located in a central shaft hole. Wherein, in the locking position, the clamping stop is at least partially positioned in the central shaft hole so as to be capable of being matched with the positioning groove, thereby limiting the movement of the surgical tool relative to the hollow shaft rod in the axial direction, and in the unlocking position, the clamping stop is withdrawn from the central shaft hole so as to be separated from the positioning groove, thereby allowing the movement of the surgical tool relative to the hollow shaft rod in the axial direction. In addition, the arrangement of the pressing sleeve on the hollow shaft rod and the structure of the pressing sleeve can limit the position of the clamping part, namely the part of the clamping part extending into the central shaft hole, wherein when the clamping part is contacted with the straight barrel section of the pressing sleeve, the pressing sleeve keeps the clamping part at a locking position, and when the clamping part is contacted with the conical barrel section of the pressing sleeve, the pressing sleeve allows the clamping part to move towards and to an unlocking position under the action of the elastic biasing part. In addition, the elastic force provided by the elastic reset piece is used for pressing the pressing sleeve to a position where the straight cylinder section is contacted with the clamping piece, namely, the clamping piece can be kept at the locking position. The part of the clamping stop piece extending into the central shaft hole under the action of the pressing sleeve is controlled to match with the positioning groove on the surgical tool, so that the clamping stop piece can be suitable for surgical tools with different positioning groove sizes.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a perspective view of a handle for a surgical tool in a ready-to-connect state with the surgical tool, provided in accordance with an embodiment of the present disclosure;

FIG. 2 is a perspective view of a handle for a surgical tool provided in accordance with an embodiment of the present disclosure;

FIG. 3 is a front view of a handle for a surgical tool provided in accordance with an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a side view of a handle for a surgical tool provided in accordance with a specific embodiment of the present disclosure;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is an exploded view of a handle for a surgical tool provided in accordance with an embodiment of the present disclosure;

FIG. 8 is another perspective view of a handle for a surgical tool provided in accordance with an embodiment of the present disclosure with the press sleeve removed;

FIG. 9 is a perspective view of a hollow shaft in a handle for a surgical tool provided in accordance with an embodiment of the present disclosure;

FIG. 10 is a perspective view of a grip for a surgical tool provided in accordance with a specific embodiment of the present disclosure;

FIG. 11 is a cross-sectional view of a press sleeve in a handle for a surgical tool provided in accordance with a specific embodiment of the present disclosure.

Description of the reference numerals

100-a handle; 1-a grip; 11-a first positioning hole; 2-hollow shaft lever; 21-a connecting end portion; 211-slot holes; 212-elongated slot; 213-a receiving hole; 22-a fixed end portion; 221-pin holes; 23-a central shaft hole; 231-a plug-in mating section; 24-moving the pin; 25-positioning pins; 3, pressing a sleeve; 31-pressing sleeve body; 311-a second positioning hole; 312-a straight barrel section; 313-a cone section; 32-a flange; 4-a latch; 41-a locking base; 42-an arcuate retention portion; 421-a guide slope; 43-connecting column; 5-a resilient biasing member; 6-elastic restoring piece; 200-a surgical tool; 201-a plug-in section; 202-positioning groove.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "inner and outer" means inner and outer with respect to the profile of the component itself, unless otherwise specified; the use of the terms first, second, etc. are intended to distinguish one element from another without order or importance. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.

According to an embodiment of the present disclosure, there is provided a handle for a surgical tool, as shown with reference to fig. 1 to 11, the handle 100 comprising a hollow shaft 2, a press sleeve 3, a catch 4, a resilient biasing member 5 and a resilient return member 6, wherein: the hollow shaft 2 comprises a connecting end portion 21 for fitting the surgical tool 200, a slot 211 communicating with a central axial hole 23 of the hollow shaft 2 is opened on the outer peripheral surface of the connecting end portion 21, the block 4 is movably fitted in the slot 211 and can move relative to the hollow shaft 2 in the radial direction to switch between a locking position where the block 4 is at least partially located in the central axial hole 23 to be capable of cooperating with the positioning groove 202 on the surgical tool 200 located in the central axial hole 23 and an unlocking position where the block 4 is withdrawn from the central axial hole 23 to be disengaged from the positioning groove 202; wherein a resilient biasing member 5 is provided between the hollow shaft 2 and the catch 4 to provide a resilient force to the catch 4 towards the unlocked position; the pressing sleeve 3 is coaxially sleeved on the hollow shaft rod 2 and can axially move relative to the hollow shaft rod 2, the inner wall of the pressing sleeve 3 is provided with a straight cylinder section 312 and a conical cylinder section 313 gradually expanding along the direction far away from the straight cylinder section 312, when the clamping part 4 is contacted with the straight cylinder section 312, the pressing sleeve 3 keeps the clamping part 4 at a locking position, and when the clamping part 4 is contacted with the conical cylinder section 313, the pressing sleeve 3 allows the clamping part 4 to face and move to an unlocking position under the action of the elastic biasing part 5; the elastic return member 6 is biased between the hollow shaft 2 and the pressing sleeve 3, and provides an elastic force for pressing the pressing sleeve 3 to a position where the straight cylinder section 312 is brought into contact with the retainer 4.

With the above technical solution, the present disclosure provides a handle for surgical tools, in which the retainer 4 is movably fitted in the groove hole 211 of the outer peripheral surface of the connecting end portion 21 and is movable in the radial direction relative to the hollow shaft 2 to switch between the locking position and the unlocking position to engage with or disengage from the positioning groove 202 on the surgical tool 200 located in the central shaft hole 23. Wherein in the locked position the catch 4 is at least partially located in the central axial bore 23 to be able to cooperate with the positioning slot 202 such that movement of the surgical tool 200 in the axial direction relative to the hollow shaft 2 may be limited, and in the unlocked position the catch 4 is withdrawn from the central axial bore 23 to disengage from the positioning slot 202 such that movement of the surgical tool 200 in the axial direction relative to the hollow shaft 2 is allowed. In addition, the arrangement of the pressing sleeve 3 on the hollow shaft 2 and the structure of the pressing sleeve 3 can limit the position of the clamping piece 4, namely, the part of the clamping piece 4 extending into the central shaft hole 23 can be limited, wherein when the clamping piece 4 is contacted with the straight barrel section 312 of the pressing sleeve 3, the pressing sleeve 3 keeps the clamping piece 4 at the locking position, and when the clamping piece 4 is contacted with the conical barrel section 313 of the pressing sleeve 3, the pressing sleeve 3 allows the clamping piece 4 to move towards and to the unlocking position under the action of the elastic biasing element 5. Furthermore, the elastic force provided by the elastic restoring member 6 is used to press the pressing sleeve 3 to a position where the straight cylinder section 312 is brought into contact with the locking piece 4, that is, the locking piece 4 can be held in the locking position. The locking unit 4 is controlled to extend into the central shaft hole 23 under the action of the pressing sleeve 3 to match with the positioning groove 202 on the surgical tool 200, so that the surgical tool can be suitable for surgical tools with different positioning groove sizes.

In the specific embodiment provided by the present disclosure, referring to fig. 4 and 6, the central shaft hole 23 may be configured with a plug fitting section 231 for fitting with the plug section 201 of the surgical tool 200, the cross-sectional shape of the plug section 201 is irregular, and the plug fitting section 231 is configured with a cross-sectional shape adapted to the plug section 201. Wherein, as the cross section of the plug portion 201 is irregular and the plug mating end is configured with a cross sectional shape adapted to the plug portion, when the plug portion 201 is mated with the plug mating section 231, the plug portion 201 can be restricted from rotating around the central axis of the surgical tool 200, i.e., the surgical tool 200 is restricted from rotating. In addition, the mating of the socket portion 201 with the socket engagement section 231 restricts the axial position of the stopper groove 202 on the surgical tool 200, so that the retainer 4 can be accurately engaged with the stopper groove 202 on the surgical tool 200.

In the specific embodiments provided by the present disclosure, grips 4 may be configured in any suitable manner. Alternatively, referring to fig. 10, the locking piece 4 may include an arc-shaped locking base 41 and an arc-shaped locking portion 42 provided on a side of the locking base 41 facing the central shaft hole 23, the arc-shaped locking portion 42 being configured with guide slopes 421 opposite to each other in the axial direction, wherein the arc-shaped locking portion 42 is configured to cooperate with the positioning groove 202 of the surgical tool 200, the guide slopes 421 are provided to guide the arc-shaped locking portion 42 to protrude into the positioning groove 202, and the locking base 41 is provided to guide the arc-shaped locking portion 42 to move within the groove hole 211 so that the arc-shaped locking portion 42 is located in the central shaft hole 23 and cooperates with the positioning groove 202 on the surgical tool 200. In other embodiments of the present disclosure, retainer 4 may be disposed in other ways, and the present disclosure is not limited thereto.

In the embodiment provided by the present disclosure, as shown with reference to fig. 7 and 10, the end faces of both ends of the latch base 41 are respectively connected to the corresponding resilient biasing members 5 through connecting posts 43 extending perpendicularly to the axial direction. When the clamping part 4 moves to the locking position, the connecting column 43 moves along with the clamping base body 41 to enable the elastic biasing member 5 to be compressed, further the pressing sleeve 3 moves axially to keep the clamping part 4 at the locking position, when the clamping part 4 needs to move to the unlocking position, the pressing sleeve 3 moves axially until the conical barrel section 313 is arranged on the outer side of the clamping part 4, and the clamping part 4 can move towards and to the unlocking position under the action of the elastic biasing member 5.

In the embodiment provided by the present disclosure, referring to fig. 8 and 9, the bottom wall of the slot 211 may be opened with a receiving hole 213 for receiving the elastic biasing member 5 and the corresponding connecting post 43, wherein one end of the elastic biasing member 5 is installed in the receiving hole 213, and the other end is biased against the connecting post 43, and the receiving hole 213 is configured to control the moving range of the latch base 41, i.e. the depth of the arc-shaped latch portion 42 into the central axis hole 23. By the depth of the arc-shaped stopping portion 42 in the central shaft hole 23, the surgical tool 200 can be suitable for different sizes of the positioning grooves 202.

In the embodiment provided by the present disclosure, referring to fig. 4, 6 and 7 to 9, the elastic restoring member 6 may be disposed in the central shaft hole 23, the connecting end portion 21 may be provided on an outer circumferential surface thereof with a bar-shaped long hole 212 extending in the axial direction, the moving pin 24 protrudes into the central shaft hole 23 through the press sleeve 3 and the bar-shaped long hole 212, one end of the elastic restoring member 6 is biased against the hollow shaft 2 and the other end is biased against the moving pin 24, wherein, the moving pin 24 passes through the pressing sleeve 3 and the strip-shaped long hole 212 and extends into the central shaft hole 23, and the moving pin 24 is in interference fit with the pin hole 221 on the pressing sleeve 3, that is, when the moving pin 24 axially moves in the elongated hole 212, the pressing sleeve 3 axially moves on the hollow shaft 2, and the elastic force applied to the moving pin 24 by the elastic restoring member 6 can restore the moving pin 24 to the initial setting position when axially moving.

In the specific embodiment provided by the present disclosure, referring to fig. 8 and 9, the elongated hole 212 may have a first end and a second end opposite to each other, that is, the first end corresponds to the upper side of the elongated hole 212 in fig. 8 and 9, the second end corresponds to the lower side of the elongated hole 212 in fig. 8 and 9, when the moving pin 24 is located at the first end, the elastic force applied to the moving pin 24 by the elastic restoring member 6 is used for pressing the moving pin 24 toward the second end, the latch member 4 contacts the tapered barrel section 313, that is, when the moving pin 24 is located at the upper side of the elongated hole 212, the latch member 4 contacts the tapered barrel section 313, the latch member 4 is located at the unlocking position, and the elastic force applied to the moving pin 24 by the elastic restoring member 6 can move the moving pin 24 toward the lower side of the elongated hole 212, that is, the elastic force applied to the moving pin 24 by the elastic restoring member 6 can move the moving pin 24 to the latch member 4 and the straight barrel section of the press sleeve 3 312 location of contact; when the moving pin 24 is located at the second end, the elastic force applied to the moving pin 24 by the elastic restoring member 6 serves to bias the moving pin 24 in a direction away from the first end, at which time the latch 4 is in contact with the straight-cylindrical section 312, and the elastic restoring member 6 and the first end cooperatively maintain the position of the moving pin 24, that is, when the moving pin 24 is located below the elongated bar-shaped hole 212, the latch 4 is in contact with the straight-cylindrical section 312, at which time the latch 4 is in the locking position, and the elastic force applied to the moving pin 24 by the elastic restoring member 6 biases the moving pin 24 in a direction toward the elongated bar-shaped hole 212, that is, the elastic force applied to the moving pin 24 by the elastic restoring member 6 and the first end cause the moving pin 24 to be maintained at a position where the latch 4 is in contact with the straight-cylindrical section 312 of the press sleeve 3.

It should be noted that the resilient biasing member 5 and the resilient return member 6 may each be configured in any suitable manner, and alternatively, as shown with reference to fig. 4, 6, 7 and 10, the resilient biasing member 5 and the resilient return member 6 are configured as springs. In other embodiments of the present disclosure, the resilient biasing member 5 and the resilient return member 6 may be in other configurations, and the present disclosure is not limited thereto.

In the embodiment provided by the present disclosure, referring to fig. 11, a flange 32 for operating the pressing sleeve 3 may be disposed on the outer circumferential surface of the pressing sleeve 3, and in operation, the pressing sleeve 3 may be axially moved on the hollow shaft 2 relative to the hollow shaft 2 only by moving the flange 32, which is simple and convenient to operate.

In the particular embodiments provided by the present disclosure, and as shown with reference to fig. 4, 6 and 7, the hollow shaft 2 may have a fixed end portion 22 opposite the connecting end portion 21, and the handle 100 includes a grip 1, the grip 1 being connected to the fixed end portion 22, wherein the hollow shaft 2 and the grip 1 may be configured in any suitable manner to enable connection therebetween. Alternatively, the hollow shaft 2 and the grip 1 are integrally formed, that is, the grip 1 and the fixed end portion 22 are integrally formed, and further alternatively, the hollow shaft 2 and the grip 1 are detachably connected, that is, the grip 1 and the fixed end portion 22 are detachably connected, wherein, referring to fig. 7, a first positioning hole 11 is provided on an outer circumferential surface of the grip 1, a second positioning hole 221 is provided on an outer circumferential surface of the fixed end portion 22, the positioning pin 25 sequentially passes through the grip 1 and the fixed end portion 22, and the positioning pin 25 is respectively in interference fit with the first positioning hole 11 and the second positioning hole 221 to fixedly connect the grip 1 and the fixed end portion 22, and when detaching, the grip 1 and the fixed end portion 22 of the hollow shaft 2 can be disconnected only by pulling out the positioning pin 25.

On the basis of the above solution, the present disclosure also provides a surgical tool assembly including the surgical tool 200 and the above-described handle for a surgical tool, the surgical tool 200 being detachably attached to the attachment end portion 21 of the handle 100.

Here, describing the procedure of attaching and detaching the handle for the surgical tool and the surgical tool provided in the present disclosure in connection with the above-described embodiment, when the handle 100 is attached to the surgical tool 200, first, the handle 100 is attached, that is, the handle 100 is fixedly connected to the grip 1 and the fixed end portion 22 by the positioning pin 25 sequentially passing through the first positioning hole 11 of the grip 1 and the second positioning hole 221 of the fixed end portion 22, then, one end of the elastic biasing member 5 is installed in the receiving hole 213 and the other end of the elastic biasing member biases the connection post 43 corresponding to the locking member 4, then, the elastic restoring member 6 is installed in the central shaft hole 23, and the moving pin 24 passes through the pin hole 221 of the pressing sleeve 3 and the elongated long hole 212 of the connection end portion 21 and protrudes into the central shaft hole 23, and one end of the elastic restoring member 6 biases the hollow shaft 2 and the other end of the elastic restoring member 6 biases the moving pin 24, namely, the installation of the handle 100 is completed, then the flange 32 of the pressing sleeve 3 is pushed to move upwards, and the inserting portion 201 of the surgical tool 200 is inserted, so that the inserting portion 201 is engaged with the inserting engagement section 231 of the central shaft hole 23, thereby limiting the rotation of the surgical tool 200 in the handle 100, then the flange 32 is released, the elastic force provided by the elastic restoring member 6 to the moving pin 24 causes the pressing sleeve 3 to move downwards and causes the latch 4 to contact with the straight cylinder section 312, thereby causing the arc-shaped latch portion 42 of the latch 4 to extend into the central shaft hole 23 to be engaged with the positioning groove 202 of the surgical tool 200, and thus, the installation of the handle 100 on the surgical tool 200 is completed. When disassembling, the flange 32 of the pressing sleeve 3 is pushed to move upwards, the clamping piece 4 can move towards and move to contact with the conical barrel section 313 under the action of the elastic biasing element 5, at the moment, the arc-shaped clamping part 42 is separated from the central shaft hole 23, and finally the inserting part 201 of the surgical tool 200 is drawn out.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A handle for surgical tools, characterized in that said handle (100) comprises a hollow shaft (2), a pressure sleeve (3), a catch (4), an elastic biasing member (5) and an elastic return member (6), wherein:

the hollow shaft (2) comprises a connecting end part (21) for assembling a surgical tool (200), a slotted hole (211) communicated with a central shaft hole (23) of the hollow shaft (2) is opened on the outer peripheral surface of the connecting end part (21), the clamping piece (4) is movably assembled in the slotted hole (211) and can move relative to the hollow shaft (2) in the radial direction to switch between a locking position and an unlocking position, in the locking position, the clamping piece (4) is at least partially positioned in the central shaft hole (23) to be matched with a positioning groove (202) on the surgical tool (200) positioned in the central shaft hole (23), and in the unlocking position, the clamping piece (4) is withdrawn from the central shaft hole (23) to be disengaged from the positioning groove (202); wherein said resilient biasing means (5) is arranged between said hollow shaft (2) and said grip (4) to provide said grip (4) with a resilient force towards said unlocked position;

the pressing sleeve (3) is coaxially sleeved on the hollow shaft rod (2) and can axially move relative to the hollow shaft rod (2), the inner wall of the pressing sleeve (3) is provided with a straight cylinder section (312) and a conical cylinder section (313) which gradually expands along the direction far away from the straight cylinder section (312), when the clamping and stopping piece (4) is in contact with the straight cylinder section (312), the pressing sleeve (3) keeps the clamping and stopping piece (4) at the locking position, and when the clamping and stopping piece (4) is in contact with the conical cylinder section (313), the pressing sleeve (3) allows the clamping and stopping piece (4) to be capable of facing and moving to the unlocking position under the action of the elastic biasing piece (5);

the elastic reset piece (6) is biased between the hollow shaft rod (2) and the pressing sleeve (3), and the elastic force is provided for pressing the pressing sleeve (3) to a position where the straight cylinder section (312) is contacted with the clamping piece (4).

2. Handle for a surgical tool according to claim 1, characterized in that the central shaft hole (23) is configured with a plug-in mating section (231) for mating with a plug-in section (201) of the surgical tool (200), the cross-sectional shape of the plug-in section (201) being profiled, the plug-in mating section (231) being configured with a cross-sectional shape adapted to the plug-in section (201).

3. The handle for surgical tools according to claim 1, wherein the catch (4) comprises an arc-shaped catch base (41) and an arc-shaped catch portion (42) provided on a side of the catch base (41) facing the central shaft hole (23), the arc-shaped catch portion (42) being configured with guide slopes (421) axially opposite to each other.

4. The handle for surgical tools as set forth in claim 3, characterized in that the end faces of the two ends of the retaining base (41) are connected to the corresponding resilient biasing member (5) by connecting posts (43) extending perpendicularly to the axial direction, respectively.

5. Handle for surgical tools, according to claim 4, characterized in that the bottom wall of the slot (211) is provided with a receiving hole (213) for receiving the resilient biasing element (5) and the corresponding attachment post (43).

6. The handle for surgical tools according to claim 1, wherein the elastic return member (6) is disposed in the central shaft hole (23), a long bar-shaped hole (212) extending in the axial direction is disposed on the outer peripheral surface of the connecting end portion (21), a moving pin (24) protrudes into the central shaft hole (23) through the pressing sleeve (3) and the long bar-shaped hole (212), and one end of the elastic return member (6) is biased against the hollow shaft (2) and the other end is biased against the moving pin (24).

7. The handle for surgical tools as set forth in claim 6, wherein the elongated hole (212) has a first end and a second end opposite to each other, and when the moving pin (24) is located at the first end, the elastic force applied to the moving pin (24) by the elastic restoring member (6) serves to press the moving pin (24) toward the direction of the second end, at which time the retaining member (4) comes into contact with the tapered cylinder section (313); when the moving pin (24) is at the second end, the spring force applied to the moving pin (24) by the resilient return member (6) acts to bias the moving pin (24) away from the first end, with the catch (4) in contact with the straight barrel section (312) and the resilient return member (6) and the first end cooperatively maintaining the position of the moving pin (24).

8. Handle for surgical tools according to claim 1, characterized in that a flange (32) for operating the pressing sleeve (3) is provided on the outer circumference of the pressing sleeve (3).

9. Handle for surgical tools according to any one of claims 1-8, characterized in that the hollow shaft (2) has a fixed end portion (22) opposite to the connecting end portion (21), the handle (100) comprising a grip (1), the grip (1) being connected to the fixed end portion (22), wherein,

the hollow shaft lever (2) and the holding part (1) are integrally formed, or,

the hollow shaft (2) and the grip element (1) are detachably connected.

10. A surgical tool assembly, characterized in that it comprises a surgical tool (200) and a handle for a surgical tool according to any one of claims 1-9, said surgical tool (200) being detachably connected to said connecting end portion (21) of said handle (100).

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