Endoscope instrument angle locking device

Abstract

The utility model discloses an endoscope instrument angle locking device, which belongs to the technical field of endoscope instruments, and comprises a handle part, one end of the handle part is rotatably connected with a clamp tube, the outer side of the right end of the clamp tube is sleeved with an adjusting block, and the left end of the clamp tube is provided with a clamp head; the endoscope instrument angle locking device further comprises a fixing base fixed to the top of the handle part. According to the angle locking device for the endoscope instrument, after the angle of the clamp head is adjusted, the drive plate is loosened to rotate and reset under the stored force of the torsion spring, meanwhile, the rack moves rightwards to reset under the elastic force of the first reset spring and drives the meshed driving gear to rotate reversely, and the driving gear drives the meshed limiting block to move leftwards; therefore, the angle of the clamp head after rotation can be locked, and the situation that when the clamp head stretches into the pleuroperitoneal cavity for operation, the angle is likely to change, and the surgical operation of a doctor is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of laparoscopic instruments, in particular to an angle locking device for laparoscopic instruments. Background Art

[0002] Pressure clamps are a type of laparoscopic instrument. During surgery, it is usually necessary to clamp blood vessels for suturing. Pressure clamps can firmly clamp blood vessels and reduce bleeding. When using the clamps, the angle of the clamp head needs to be adjusted, and then locked by an angle locking device.

[0003] For example, the clamp applier with publication number "CN216455168U" has a proximal end of a sleeve connected to a handle portion in a drivable manner; a connecting rod, which is accommodated in the sleeve and the proximal end of the connecting rod is connected to the handle portion; a clamp head, which is rotatably connected to the distal end of the connecting rod and is used to clamp and close the ligation clip, and the handle portion can drive the sleeve to move so as to close or open the clamp head; a manual reset structure, which is arranged on the handle portion and is operably matched with the sleeve. The movement of the manual reset structure can drive the sleeve to move toward the proximal end so as to open the clamp head, thereby solving the problem in the prior art that the clamp applier cannot be used normally when the clamp head is stuck;

[0004] When the above technical solution is in use, the rotating structure can drive the connecting rod to rotate coaxially, and then drive the clamp head to rotate, so as to adjust the angle of the clamp head according to the specific position of the blood vessel. However, there is a lack of a limit slot, so that after the angle of the clamp head is adjusted and inserted into the thoracic or abdominal cavity for operation, the angle may change, thereby affecting the doctor's surgical operation. At the same time, the looseness of the clamp head is particularly obvious when the instrument becomes old.

[0005] Therefore, we proposed a laparoscopic instrument angle locking device that can solve the above problems well. Utility Model Content

[0006] The purpose of the utility model is to provide a laparoscopic instrument angle locking device to solve the problem of lack of a limit slot proposed in the above-mentioned background technology, which makes the angle of the forceps head change after the angle is adjusted and inserted into the thoracic or abdominal cavity for operation, thereby affecting the doctor's surgical operation. At the same time, the looseness of the forceps head is particularly obvious after the instrument becomes old.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laparoscope instrument angle locking device, comprising a handle portion, one end of the handle portion is rotatably connected to a clamp tube, an adjustment block is sleeved and installed on the outer side of the right end of the clamp tube, and a clamp head is installed on the left end of the clamp tube;

[0008] A laparoscope instrument angle locking device, further comprising:

[0009] A fixing seat is fixed on the top of the handle portion, and a driving plate is rotatably connected to the right side of the fixing seat through a shaft rod, and a torsion spring is installed at the connection position between the shaft end of the driving plate and the fixing seat;

[0010] A limit block is slidably connected to the upper part of the fixed seat, a tooth block is installed at an equal interval at the bottom of the limit block, and the left end of the limit block passes through the interior of the fixed seat, a rack is slidably connected to the lower part of the fixed seat, and a first return spring is installed between the left end of the rack and the inner wall of the fixed seat;

[0011] The right end of the rack passes through the interior of the fixed seat, and the rack is connected to the driving plate through a movable plate. A driving gear is connected to the fixed seat between the rack and the limit block through an axis rotation, and a limit groove is provided at an equal angle on the right side of the adjustment block.

[0012] Preferably, both ends of the movable plate are hingedly connected to the bottom of the driving plate and the right end of the rack respectively.

[0013] Preferably, the driving gear is meshingly connected with the rack and the tooth block, and the moving directions of the rack and the limit block are opposite.

[0014] Preferably, a receiving groove is symmetrically opened at the left end of the limit block, and a guide block is slidably connected to the inner wall of the receiving groove, and a third return spring is installed between the ends of the two guide blocks and the inner wall of the receiving groove, and deep grooves are symmetrically opened about the center point of the limit groove inside the adjustment block, and a resistance block is slidably connected to the inner wall of the deep groove, and a second return spring is installed between the end of the resistance block and the inner wall of the deep groove.

[0015] Preferably, the position of the limit block corresponds to that of the limit slot, and the limit block and the limit slot are snap-fitted together.

[0016] Preferably, the guide block and the abutment block are both arranged in a "T" shape, and the ends of the guide block and the abutment block are fitted together.

[0017] Preferably, the abutment block forms an elastic telescopic structure with the deep groove through the second return spring, and the guide block forms an elastic telescopic structure with the accommodating groove through the third return spring.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the laparoscope instrument angle locking device adopts a new structural design, and its specific contents are as follows:

[0019] (1) When the medical staff needs to adjust the angle of the clamp head, they press the drive plate to make the drive plate rotate downward around the shaft, and use the movable plate to push the rack to the left, so that the rack drives the active gear to rotate, and at the same time the active gear drives the meshing limit block to move to the right, so that it is separated from the limit groove, thereby releasing the lock of the adjustment block, and then the medical staff can adjust the angle of the clamp head by rotating the adjustment block;

[0020] Furthermore, when the angle adjustment of the clamp head is completed, the driving plate is released to rotate and reset under the stored force of the torsion spring, and at the same time, the rack moves to the right and resets under the elastic force of the first reset spring, and the meshing active gear is reversed, and the active gear drives the meshing limit block to move to the left and snap into the corresponding limit groove, so that the angle of the clamp head after rotation can be locked to prevent the angle from changing when the clamp head is extended into the thoracic and abdominal cavity for operation, which affects the doctor's surgical operation;

[0021] (2) When the limit block is inserted into the limit groove, the third return spring is used to make the guide block move under pressure, and at the same time, the guide block will press the resistance block to cause it to move. Then, when the guide block moves from one side of the resistance block to the other side, the resistance block is reset under the elastic force of the second return spring and blocks the guide block, thereby further improving the stability of the limit block inserted into the limit groove and ensuring the firmness of the locking;

[0022] Furthermore, when the limiting block is separated from the limiting groove, the above operation is repeated so that the abutting block no longer blocks the guiding block, thereby facilitating the separation of the limiting block from the limiting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main cross-sectional structure of the fixing seat of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the driving plate rotating downwards of the utility model;

[0025] Figure 3 This is a side view structural diagram of the adjustment block of the utility model;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the limit block, the guide block and the conflict block of the utility model;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the rack, the driven gear and the first return spring of the utility model;

[0028] Figure 6 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0029] Figure 7It is a schematic diagram of the connection structure between the guide block and the third return spring of the utility model.

[0030] In the figure: 1. handle; 2. clamp tube; 3. adjustment block; 4. clamp head; 5. fixed seat; 6. drive plate; 7. torsion spring; 8. movable plate; 9. rack; 10. driving gear; 11. limit block; 12. tooth block; 13. first return spring; 14. accommodating groove; 15. limit groove; 16. deep groove; 17. guide block; 18. second return spring; 19. third return spring; 20. resistance block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-Figure 7 , the utility model provides the following technical solutions: a laparoscope instrument angle locking device;

[0033] Embodiment 1: In order to solve the problem that the prior art lacks a limit slot, so that after the angle of the forceps head is adjusted and inserted into the thoracic and abdominal cavities for operation, the angle may change, which in turn affects the doctor's surgical operation, and at the same time, the looseness of the forceps head is particularly obvious after the instrument is old, the following solution is disclosed, and specific reference is made to Figure 1-Figure 6 As shown, it comprises a handle portion 1, one end of the handle portion 1 is rotatably connected to a clamp tube 2, an adjustment block 3 is sleeved and installed on the outer side of the right end of the clamp tube 2, and a clamp head 4 is installed on the left end of the clamp tube 2;

[0034] It also includes: a fixed seat 5 is fixed on the top of the handle part 1, and a driving plate 6 is rotatably connected to the right side of the fixed seat 5 through a shaft rod, and a torsion spring 7 is installed at the connection position between the shaft end of the driving plate 6 and the fixed seat 5; a limited block 11 is slidably connected to the upper part of the fixed seat 5, and a first return spring 13 is installed between the left end of the rack 9 and the inner wall of the fixed seat 5; the driving gear 10 is meshed with the rack 9 and the gear block 12, and the moving directions of the rack 9 and the limit block 11 are opposite, and a limit slot 15 is provided at an equal angle on the right side of the adjustment block 3, and the limit block 11 corresponds to the position of the limit slot 15, and the limit block 11 and the limit slot 15 are snap-fitted;

[0035] When the angle adjustment of the clamp head 4 is completed, the doctor releases the drive plate 6 to rotate and reset it under the stored force of the torsion spring 7. At the same time, the rack 9 moves to the right and resets under the elastic force of the first reset spring 13, and reverses with the meshing active gear 10. The active gear 10 drives the meshing limit block 11 to move to the left and snaps into the corresponding limit groove 15 to limit the adjustment block 3, so that the angle of the clamp head 4 after rotation can be locked to prevent the angle from changing when the clamp head 4 is extended into the thoracic and abdominal cavity for operation, affecting the doctor's surgical operation. Then the doctor extends the clamp into the patient's thoracic and abdominal cavity, and controls the clamping force by adjusting the handle 1 to firmly clamp the target tissue or blood vessel.

[0036] Embodiment 2: Different from Embodiment 1, in this embodiment, by pressing the driving plate 6, the limit of the adjustment block 3 can be released, thereby facilitating the adjustment of the angle of the clamp head 4. For details, refer to Figure 1-Figure 6 As shown, tooth blocks 12 are installed at equal intervals at the bottom of the limit block 11, and the left end of the limit block 11 passes through the interior of the fixed seat 5, and a rack 9 is slidably connected to the lower part of the interior of the fixed seat 5, and the right end of the rack 9 passes through the interior of the fixed seat 5, and the rack 9 is connected to the driving plate 6 through a movable plate 8, and the two ends of the movable plate 8 are respectively hinged to the bottom of the driving plate 6 and the right end of the rack 9, and the interior of the fixed seat 5 is located between the rack 9 and the limit block 11 and is connected to a driving gear 10 through an axis rotation;

[0037] When the medical staff needs the angle of the clamp head 4, they press the drive plate 6 to make the drive plate 6 rotate downward around the shaft, and use the movable plate 8 to push the rack 9 to move to the left, so that the rack 9 drives the active gear 10 to rotate, and at the same time the active gear 10 drives the meshing limit block 11 to move to the right, so that it is separated from the limit groove 15, thereby releasing the lock of the adjustment block 3, and then the medical staff can adjust the angle of the clamp head 4 by rotating the adjustment block 3.

[0038] Embodiment 3: Different from Embodiment 2, this embodiment utilizes the elastic force of the second reset spring 18 to drive the resistance block 20 to reset, so that it blocks the guide block 17, further improving the stability of the limit block 11 inserted into the limit groove 15, and ensuring the firmness of the locking. For details, refer to Figure 1 , Figure 3 and Figure 7As shown, a receiving groove 14 is symmetrically provided at the left end of the limiting block 11, and a guide block 17 is slidably connected to the inner wall of the receiving groove 14, and a third return spring 19 is installed between the ends of the two guide blocks 17 and the inner wall of the receiving groove 14, and a deep groove 16 is symmetrically provided inside the adjusting block 3 about the center point of the limiting groove 15, and a resistance block 20 is slidably connected to the inner wall of the deep groove 16, and the guide block 17 and the resistance block 20 are both arranged in a "T" shape, and the guide block 17 fits with the end of the resistance block 20, and a second return spring 18 is installed between the end of the resistance block 20 and the inner wall of the deep groove 16, and the resistance block 20 forms an elastic telescopic structure with the deep groove 16 through the second return spring 18, and the guide block 17 forms an elastic telescopic structure with the receiving groove 14 through the third return spring 19;

[0039] When the limit block 11 is inserted into the limit groove 15, the third return spring 19 is used to make the guide block 17 move under extrusion and shrink into the accommodating groove 14. At the same time, the guide block 17 will squeeze the resistance block 20, causing it to move and shrink into the deep groove 16. Then, when the guide block 17 moves from one side of the resistance block 20 to the other side, the resistance block 20 is reset under the elastic force of the second return spring 18 and blocks the guide block 17, further improving the stability of the limit block 11 inserted into the limit groove 15 and ensuring the firmness of the locking. Then, when the limit block 11 is separated from the limit groove 15, the above operation is repeated so that the resistance block 20 no longer blocks the guide block 17, thereby facilitating the separation of the limit block 11 from the limit groove 15.

[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laparoscope instrument angle locking device, comprising a handle portion (1), one end of the handle portion (1) being rotatably connected to a clamp tube (2), an adjustment block (3) being sleeved and installed on the outer side of the right end of the clamp tube (2), and a clamp head (4) being installed on the left end of the clamp tube (2); It is characterized in that Also includes: A fixing seat (5) is fixed on the top of the handle portion (1), and a driving plate (6) is rotatably connected to the right side of the fixing seat (5) via a shaft rod, and a torsion spring (7) is installed at the connection position between the shaft end of the driving plate (6) and the fixing seat (5); A limit block (11) is slidably connected to the upper part of the fixed seat (5), tooth blocks (12) are installed at equal intervals at the bottom of the limit block (11), and the left end of the limit block (11) passes through the interior of the fixed seat (5), and a rack (9) is slidably connected to the lower part of the fixed seat (5), and a first return spring (13) is installed between the left end of the rack (9) and the inner wall of the fixed seat (5); The right end of the rack (9) passes through the interior of the fixed seat (5), and the rack (9) is connected to the driving plate (6) via a movable plate (8). A driving gear (10) is rotatably connected to the rack (9) and the limit block (11) inside the fixed seat (5), and a limit groove (15) is provided at an equal angle on the right side of the adjustment block (3).

2. The laparoscopic instrument angle locking device according to claim 1, characterized in that: Both ends of the movable plate (8) are hingedly connected to the bottom of the driving plate (6) and the right end of the rack (9) respectively.

3. The laparoscopic instrument angle locking device according to claim 1, characterized in that: The driving gear (10) is meshingly connected with the rack (9) and the tooth block (12); the moving directions of the rack (9) and the limiting block (11) are opposite.

4. The laparoscopic instrument angle locking device according to claim 1, characterized in that: The left end of the limit block (11) is symmetrically provided with a receiving groove (14) in the upper and lower directions, and the inner wall of the receiving groove (14) is slidably connected with a guide block (17), and a third return spring (19) is installed between the ends of the two guide blocks (17) and the inner wall of the receiving groove (14). The adjustment block (3) is symmetrically provided with a deep groove (16) about the center point of the limit groove (15), and the inner wall of the deep groove (16) is slidably connected with a resistance block (20), and a second return spring (18) is installed between the end of the resistance block (20) and the inner wall of the deep groove (16).

5. The laparoscopic instrument angle locking device according to claim 1, characterized in that: The positions of the limiting block (11) and the limiting groove (15) correspond to each other, and the limiting block (11) and the limiting groove (15) are snap-fittedly connected.

6. The laparoscopic instrument angle locking device according to claim 4, characterized in that: The guide block (17) and the abutment block (20) are both arranged in a T-shape, and the ends of the guide block (17) and the abutment block (20) are fitted together.

7. The laparoscopic instrument angle locking device according to claim 4, characterized in that: The resisting block (20) forms an elastic telescopic structure with the deep groove (16) through the second return spring (18), and the guiding block (17) forms an elastic telescopic structure with the accommodating groove (14) through the third return spring (19).

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