CN219982993U

CN219982993U - Control device for endoscopic surgical instrument

Info

Publication number: CN219982993U
Application number: CN202320995050.2U
Authority: CN
Inventors: 贺健; 苏剑云; 柳全乐
Original assignee: Jiangsu Weidekang Medical Science & Technology Co ltd
Current assignee: Jiangsu Weidekang Medical Science & Technology Co ltd
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-11-10
Anticipated expiration: 2033-04-26

Abstract

The utility model relates to the technical field of medical instruments, in particular to an operation device for an endoscopic surgical instrument, which comprises a handle and a slip ring sleeved on the handle in a sliding way, wherein a retaining mechanism for relatively fixing the handle and the slip ring is arranged on the handle; according to the utility model, the locking of the handle and the slip ring is realized by matching the clamping groove on the handle with the bulge on the retaining mechanism, so that the extended operation part is fixed, a doctor does not need to push the slip ring to operate all the time when in operation, the fatigue of the operator is reduced, the risk of retraction of the operation part is reduced, and the operation time is shortened, and the operation efficiency is improved.

Description

Control device for endoscopic surgical instrument

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a control device for an endoscopic surgical instrument.

Background

Medical instruments such as a mucous membrane incision knife, a snare, a hemostatic clamp and the like comprise a handle, a sliding ring sleeved on the handle in a sliding manner, and an operation part positioned at the head (the operation part of the mucous membrane incision knife head is a knife head, the operation part of the snare head is a snare), and the extension or retraction of the operation part can be controlled by controlling the relative positions of the handle and the sliding ring, but a retaining mechanism is not arranged between the handle and the sliding ring, so that fingers must be pushed or pulled for a long time in the operation process of a doctor to keep the operation state (clamping, pulling, cutting and the like) of the operation part, once the fingers are loosened, the operation part can be released from the operation state of target human tissues, an operator needs to operate the target human tissues again to operate the operation, the operation accuracy is reduced, the fatigue strength of the operation fingers is extremely high, the operation progress is influenced, and the operation risk is remarkably improved along with the extension of operation time.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the problems that in the prior art, a retaining mechanism is not arranged between a handle and a slip ring of a medical instrument, so that the fatigue strength of fingers operated by an operator is extremely high and the operation progress is influenced, the operating device for the surgical instrument under an endoscope is provided.

In order to solve the technical problems, the utility model adopts the following technical scheme: the operating device for the endoscopic surgical instrument comprises a handle and a slip ring sleeved on the handle in a sliding way, wherein a backstop mechanism for fixing the handle and the slip ring relatively is arranged on the handle;

the retaining mechanism comprises a fixed seat connected with the slip ring and a retaining piece arranged on the fixed seat, wherein the retaining piece is provided with a protrusion matched with a clamping groove on the handle, when the protrusion is clamped into the clamping groove, the handle is relatively fixed with the slip ring, so that the extending operation part can be fixed, when the protrusion is separated from the clamping groove, the slip ring can slide on the handle, and the operation part can be driven to advance and retreat.

According to the technical scheme, the clamping groove on the handle is matched with the protrusion on the retaining mechanism to lock the handle and the slip ring, so that the extended operation part is fixed, a doctor does not need to push the slip ring to operate all the time when operating, fatigue of the operator is reduced, the risk of retraction of the operation part is reduced, and therefore the operation time can be shortened, and the operation efficiency is improved.

Further, the retaining piece comprises a knob arranged on the fixing seat in a rotating mode and a limiting body arranged on the fixing seat in a longitudinally sliding mode, the protrusion is fixedly connected with the limiting body, a cavity is formed in the limiting body, when the knob rotates to a horizontal state, the knob is separated from the cavity wall of the cavity, the protrusion moves downwards under the action of gravity and is clamped into the clamping groove, the handle is relatively fixed with the sliding ring, the operating portion is relatively fixed, when the knob rotates to a vertical state, the knob is abutted to the top wall of the cavity, the protrusion moves upwards and is separated from the clamping groove, and the handle and the sliding ring can relatively slide.

Further, the fixing base is sequentially provided with an upper buckle, a rotating shaft and a lower buckle from top to bottom, the knob is rotationally sleeved on the rotating shaft, the top of the limiting body protrudes with an upper supporting leg, the bottom of the limiting body protrudes with a lower supporting leg, the upper supporting leg is clamped into the upper buckle, and the lower supporting leg is clamped into the lower buckle. Through the cooperation of last buckle and last stabilizer blade, the cooperation of buckle and lower stabilizer blade down can guarantee that the spacing body goes up and down in a straight line to guarantee that the arch goes up and down in a straight line, avoid protruding and draw-in groove to take place the jamming.

Further, be equipped with compression spring between last stabilizer blade and the last buckle, can make protruding and draw-in groove realize better joint effect through compression spring's elasticity effect.

Further, the top wall of the cavity is provided with a concave section which is concave upwards, when the knob is rotated, the knob is rotated from a horizontal state to a vertical state, and the knob is clamped in the concave section so as to keep the knob in the vertical state, so that the knob is prevented from rotating to cause the protrusion to displace.

Further, a convex column is arranged on the fixing seat, the retaining piece comprises a torsion spring wound on the convex column and a rotating block rotatably arranged on the convex column, one end of the torsion spring is fixed on the fixing seat, the other end of the torsion spring is fixed on the rotating block, and the bulge is fixedly connected with the rotating block; the rotating block is rotated clockwise at first, the bulge is rotated upwards to be separated from the clamping groove, then the sliding ring is driven to slide on the handle to a preset position, the rotating block is loosened, the rotating block is rotated anticlockwise under the action of the elasticity of the torsion spring, the bulge is rotated downwards to be clamped into the clamping groove, and the handle 1 and the sliding ring 2 are fixed relatively.

Further, the fixed seat is arranged on the handle in a sliding sleeve manner, and is provided with two hooks which are used for hooking the slip ring to fix the retaining mechanism on the slip ring, and the two hooks are of U-shaped structures.

Further, the bulge is located at one end of the rotating block, and a handle convenient for force application is arranged at the other end of the rotating block.

The utility model has the beneficial effects that: according to the operating device of the surgical instrument under the endoscope, the locking of the handle and the slip ring is realized by matching the clamping groove on the handle with the protrusion on the retaining mechanism, so that the extended operating part is fixed, a doctor does not need to push or tighten the slip ring to operate the operating part of the head of the surgical instrument all the time when operating, fatigue of the operator is reduced, the risk of retraction of the operating part is reduced, and therefore, the operating time is shortened, and the operating efficiency is improved.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a perspective view of a first embodiment;

FIG. 2 is an enlarged partial view of portion A of FIG. 1;

FIG. 3 is a schematic view of the structure of the handle and the slip ring in the locked state in the first embodiment;

FIG. 4 is a schematic view of the structure of the handle and the slip ring in the unlocked state in the first embodiment;

FIG. 5 is an exploded view of an embodiment of a stopping mechanism;

FIG. 6 is a front view of the retaining mechanism with the knob in a horizontal position in accordance with the first embodiment;

FIG. 7 is a schematic view of a structure in which a handle and a slip ring are locked in a second embodiment;

FIG. 8 is an exploded view of a second embodiment of a stopping mechanism;

in the figure:

1. a handle; 101. a clamping groove; 2. a slip ring; 3. an operation unit; 4. a stopping mechanism; 401. a protrusion; 402. a fixing seat; 4021. an upper buckle; 4022. a rotating shaft; 4023. a lower buckle; 4024. a convex column; 4025. a claw; 403. a knob; 404. a limiting body; 4041. a cavity; 4042. an upper support leg; 4043. a lower support leg; 4044. a recessed section; 405. a compression spring; 406. a torsion spring; 407. a rotating block; 4071. a handle.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present utility model, it should be understood that the terms "push," "move," "front and back," "outer," "inner," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Embodiment one:

as shown in fig. 1 to 6, the present utility model is a control device for an endoscopic surgical instrument, including but not limited to a mucosa incision knife, a snare and a hemostatic clip, the medical instrument includes a handle 1, a slip ring 2 and an operation part 3, the operation part 3 may be, but not limited to, a knife head, a snare, etc., the slip ring 2 is slidably sleeved on the handle 1, a guy cable is arranged between the slip ring 2 and the operation part 3, a sleeve is arranged outside the guy cable, and the guy cable is pulled to move by controlling the relative position of the handle 1 and the slip ring 2, so as to drive the operation part 3 at the head of the guy cable to extend or retract the sleeve.

A retaining mechanism 4 for fixing the handle 1 and the slip ring 2 relative to each other is mounted on the handle 1 to fix the state of the operation part 3; the retaining mechanism 4 comprises a fixed seat 402 and a retaining piece arranged on the fixed seat 402, the fixed seat 402 is arranged on the handle 1 in a sliding sleeve mode, the fixed seat 402 is provided with a claw 4025 used for hooking the slip ring 2 to fix the retaining mechanism 4 on the slip ring 2, and the claw 4025 has two U-shaped structures.

The retaining piece comprises a knob 403 rotatably arranged on the fixed seat 402 and a limiting body 404 longitudinally and slidably arranged on the fixed seat 402, and the limiting body 404 is connected with a protrusion 401 matched with the clamping groove 101 on the handle 1 through a cross rod. Fixing base 402 is equipped with buckle 4021, pivot 4022 and lower buckle 4023 from top to bottom in proper order, and knob 403 rotates the cover and establishes on pivot 4022 and knob 403 is approximately a style of calligraphy structure, and limit body 404 top protrusion has upper foot 4042, and the bottom protrusion has lower foot 4043, and upper foot 4042 card is gone up buckle 4021 and is equipped with compression spring 405 before both, can make protruding 401 and draw-in groove 101 realize better joint effect through compression spring 405's elasticity effect, and lower foot 4043 card is gone into buckle 4023 down. Through the cooperation of the upper buckle 4021 and the upper support leg 4042, the cooperation of the lower buckle 4023 and the lower support leg 4043 can ensure that the limiting body 404 is lifted linearly, so that the protrusion 401 is lifted linearly, the clamping stagnation between the protrusion 401 and the clamping groove 101 is avoided, the maximum travel of the limiting body 404 when the limiting body 404 is propped against the upper buckle 4021 is limited, and the maximum travel of the limiting body 404 when the limiting body 404 is propped against the lower buckle 4023 is limited.

The inner part of the limiting body 404 forms a cavity 4041, and the knob 403 can rotate in the cavity 4041 to drive the limiting body 404 to lift and drive the protrusion 401 to lift. When the knob 403 is in a horizontal state, the distance between the side wall of the cavity 4041 and the rotation axis of the knob 403 is L2, L2 is larger than the rotation radius R of the knob 403, the knob 403 is not contacted with the cavity wall of the cavity 4041, the protrusion 401 on the limiting body 404 is clamped into the clamping groove 101 under the action of gravity and the elasticity of the compression spring 405, and the handle 1 and the slip ring 2 are relatively fixed; at this time, the distance between the top wall of the cavity 4041 and the rotation axis of the knob 403 is L1, L1 is smaller than the rotation radius R of the knob 403, and when the knob 403 rotates from the horizontal state to the vertical state, the knob 403 contacts with the top wall of the cavity 4041 and drives the limiting body 404 to move upwards, so as to drive the protrusion 401 to move upwards and disengage from the clamping groove 101, and the slip ring 2 can slide on the handle 1 to drive the operation portion 3 to move forwards and backwards. When the knob 403 is rotated to the vertical state, the knob 403 is blocked in the concave section 4044 of the top wall of the cavity 4041, and the knob 403 can be kept in the vertical state by combining the elasticity of the compression spring 405, so that the protrusion 401 is prevented from being displaced due to the rotation of the knob 403.

Embodiment two:

as shown in fig. 7 to 8, the second embodiment is different from the first embodiment in that: the fixed seat 402 is provided with a boss 4024, the retaining piece comprises a torsion spring 406 wound on the boss 4024 and a rotating block 407 rotatably arranged on the boss 4024, one end of the torsion spring 406 is fixed on the fixed seat 402, the other end of the torsion spring 406 is fixed on the rotating block 407, one end of the rotating block 407 is connected with a protrusion 401 matched with the clamping groove 101 on the handle 1 through a cross rod, and the other end of the rotating block 407 is provided with a handle 4071 which is convenient for applying force. First, the rotating block 407 is rotated clockwise, the protrusion 401 is rotated upwards to be separated from the clamping groove 101, then the sliding ring 2 is driven to slide on the handle 1 to a preset position, then the rotating block 407 is loosened, the rotating block 407 is rotated anticlockwise under the action of elasticity of the torsion spring 406, the protrusion 401 is rotated downwards to be clamped into the clamping groove 101, and the handle 1 and the sliding ring 2 are fixed relatively.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A manipulator for an endoscopic surgical instrument, characterized by: comprises a handle (1) and a slip ring (2) which is sleeved on the handle (1) in a sliding way, wherein a backstop mechanism (4) for fixing the handle (1) and the slip ring relatively is arranged on the handle (1);

the retaining mechanism (4) comprises a fixed seat (402) connected with the slip ring (2) and a retaining piece arranged on the fixed seat (402), wherein a protrusion (401) matched with the clamping groove (101) on the handle (1) is arranged on the retaining piece, when the protrusion (401) is clamped into the clamping groove (101), the handle (1) is relatively fixed with the slip ring (2), and when the protrusion (401) is separated from the clamping groove (101), the handle (1) and the slip ring (2) can relatively slide.

2. A manipulator for an endoscopic surgical instrument as defined in claim 1, wherein: the retaining piece comprises a knob (403) arranged on a fixed seat (402) in a rotating mode and a limiting body (404) arranged on the fixed seat (402) in a sliding mode along the longitudinal direction, the protrusion (401) is fixedly connected with the limiting body (404) and a cavity (4041) is formed in the limiting body (404), when the knob (403) is separated from the top wall of the cavity (4041), the protrusion (401) moves downwards under the action of gravity and is clamped into the clamping groove (101), and when the knob (403) is abutted to the top wall of the cavity (4041), the protrusion (401) moves upwards and is separated from the clamping groove (101).

3. A manipulator for an endoscopic surgical instrument as defined in claim 2, wherein: fixing base (402) are equipped with buckle (4021), pivot (4022) and buckle (4023) down in proper order from top to bottom, knob (403) rotate the cover and establish on pivot (4022), limit body (404) top protrusion has upper foot (4042), and the bottom protrusion has lower foot (4043), upper foot (4042) card goes into buckle (4021), lower foot (4043) card goes into buckle (4023).

4. A manipulator for an endoscopic surgical instrument according to claim 3, wherein: a compression spring (405) is arranged between the upper support leg (4042) and the upper buckle (4021).

5. A manipulator for an endoscopic surgical instrument as defined in claim 2, wherein: the top wall of the cavity (4041) is provided with a concave section (4044) which is concave upwards.

6. A manipulator for an endoscopic surgical instrument as defined in claim 1, wherein: the fixed seat (402) is provided with a convex column (4024), the retaining piece comprises a torsion spring (406) wound on the convex column (4024) and a rotating block (407) rotatably arranged on the convex column (4024), one end of the torsion spring (406) is fixed on the fixed seat (402), the other end of the torsion spring is fixed on the rotating block (407), and the convex block (401) is fixedly connected with the rotating block (407).

7. A manipulator for an endoscopic surgical instrument as defined in claim 2, wherein: the fixed seat (402) is arranged on the handle (1) in a sliding sleeve mode, and the fixed seat (402) is provided with a claw (4025) used for hooking the slip ring (2).

8. A manipulator for an endoscopic surgical instrument as defined in claim 6, wherein: the bulge (401) is positioned at one end part of the rotating block (407), and a handle (4071) is arranged at the other end part of the rotating block (407).