Clamping forceps

Abstract

The utility model discloses a pair of clamping forceps which comprises a clamping mechanism used for clamping surgical instruments, and the clamping mechanism comprises a clamping screw rod, a connecting arm, a fixed clamping block, a movable clamping block and a clamping nut. Wherein the connecting arm is connected to the clamping screw rod, the fixed clamping block is connected to the connecting arm, the movable clamping block is connected to the clamping screw rod in a sliding and sleeving mode and arranged opposite to the fixed clamping block, and the clamping nut is connected to the clamping screw rod in a threaded mode. The clamping nut is used for driving the movable clamping block to move towards the fixed clamping block in the rotating process so that the movable clamping block can clamp the surgical instrument to the fixed clamping block. The surgical instrument clamping device can clamp surgical instruments, the stability of clamping the surgical instruments can be improved, and the surgical instruments are prevented from falling off.

Description

Technical Field

[0001] The utility model relates to a clamping forceps. Background Art

[0002] At present, during some operations, medical staff need to hold surgical instruments for a long time. For some relatively heavy surgical instruments, long-term hand-held operation by medical staff will cause arm soreness and consume a large amount of physical strength of medical staff. Furthermore, it will affect the accuracy of the operation and bring risks to the operation. Therefore, in order to prevent arm soreness of medical staff and save their physical strength, tools are needed to fix the surgical instruments to provide support for the surgical instruments. For example, a colonoscopy operation fixing frame disclosed in Chinese Patent with publication number CN211243799U can fix surgical instruments during colonoscopy operations. However, only an inverted horn-shaped mirror clip is used in this colonoscopy operation fixing frame to hold the surgical instrument by friction, and the clamping of the surgical instrument is unstable, resulting in the risk of the surgical instrument falling. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a clamping forceps which can clamp surgical instruments, improve the clamping stability of the surgical instruments and avoid the falling of the surgical instruments.

[0004] To solve the above technical problem, the technical solution of the utility model is: a clamping forceps, which comprises a clamping mechanism for clamping surgical instruments, and the clamping mechanism comprises a clamping screw, a connecting arm, a fixed clamping block, a movable clamping block and a clamping nut;

[0005] The connecting arm is connected to the clamping screw;

[0006] The fixed clamping block is connected to the connecting arm;

[0007] The movable clamping block is slidably sleeved on the clamping screw and is arranged opposite to the fixed clamping block;

[0008] The clamping nut is threadedly connected to the clamping screw, and the clamping nut is used to drive the movable clamping block to move towards the fixed clamping block during rotation so that the movable clamping block clamps the surgical instrument on the fixed clamping block.

[0009] Furthermore, a sliding groove is arranged on the movable clamping block, and the connecting arm is slidably fitted in the sliding groove.

[0010] Furthermore, a specific structure of the connecting arm is provided. The connecting arm is a C-shaped structure, and the connecting arm comprises a first mounting portion, a second mounting portion and an arm body;

[0011] One end of the arm body is connected to the first mounting portion, and the other end of the arm body is connected to the second mounting portion;

[0012] The first mounting portion is connected to one end of the clamping screw;

[0013] The fixed clamping block is connected to the second mounting portion.

[0014] Furthermore, the movable clamping block is rotatably connected to the clamping nut.

[0015] Furthermore, the clamping nut is provided with a rotary joint portion, and an annular groove is provided on the outer side wall of the rotary joint portion;

[0016] One end of the movable clamping block is sleeved on the outside of the rotary joint portion, and at least one pin shaft extending into the annular groove is connected to the movable clamping block.

[0017] Furthermore, the clamping pliers further include a universal connection mechanism and a fixed locking mechanism;

[0018] The clamping screw in the clamping mechanism is connected to the universal connection mechanism;

[0019] The universal connection mechanism is connected to the fixed locking mechanism, and the universal connection mechanism is used to lock the position of the clamping mechanism relative to the fixed locking mechanism after the clamping mechanism rotates in all directions relative to the fixed locking mechanism;

[0020] The fixed locking mechanism is used to be locked and connected to an external fixing member.

[0021] Furthermore, a specific structure of the fixed locking mechanism is provided. The fixed locking mechanism includes a locking seat, a clamping block and a clamping screw;

[0022] A locking cavity for an external fixing member to extend into is provided in the locking seat, and the universal connection mechanism is connected to the locking seat;

[0023] The clamping screw is threadedly connected to the locking seat, and one end of the clamping screw extends into the locking cavity;

[0024] The clamping block is connected to the clamping screw and is located in the locking cavity. The clamping screw is used to drive the clamping block to move during the screwing process so that the clamping block presses the external fixing member extending into the locking cavity against the locking seat.

[0025] Furthermore, a specific structure of the universal connection mechanism is provided. The universal connection mechanism includes a base assembly, a universal connection ball, a locking block and a locking drive mechanism;

[0026] The base assembly is connected to the fixed locking mechanism;

[0027] The clamping screw is connected to the universal joint ball;

[0028] The universal joint ball is provided with a ball head, and the ball head is rotatably connected to the base assembly in a universal manner;

[0029] The locking block is slidably arranged in the base assembly and is used to abut against one end of the ball head, and the base assembly is provided with a locking step that protrudes radially inward and is used to abut against the other end of the ball head;

[0030] The locking drive mechanism is connected to the base assembly and is used to drive the locking block to move towards the ball head to press the ball head against the locking step, thereby locking the position of the universal joint ball relative to the base assembly.

[0031] Furthermore, the base assembly includes a fixed seat and a rotating seat;

[0032] The fixed seat is fixedly connected to the fixed locking mechanism;

[0033] The rotating seat is rotatably connected to the fixed seat, and the rotating seat is provided with an opening groove;

[0034] The universal joint ball further includes a connecting portion and a rod portion. One end of the rod portion is connected to the connecting portion, the other end of the rod portion is connected to the ball head, the clamping screw is connected to the connecting portion, the ball head is rotatably connected to the rotating seat in a universal manner, and the rod portion is used to rotate and snap into the opening groove;

[0035] The locking block is slidably arranged in the rotating seat and is used to abut against one end of the ball head, and the locking step is arranged on the rotating seat and is used to abut against the other end of the ball head;

[0036] The locking drive mechanism is connected to the fixed seat, and the locking drive mechanism is used to drive the locking block to move towards the ball head to press the ball head against the locking step, thereby driving the rotating seat to be locked and fixed on the fixed seat, so as to lock the position of the universal joint ball relative to the fixed seat.

[0037] Furthermore, a specific structure of the locking drive mechanism is provided. The locking drive mechanism includes a first driving member, a second driving member, and a driving bolt;

[0038] One side of the locking block is provided with a first inclined surface portion, and the other side of the locking block is provided with a second inclined surface portion;

[0039] The first driving member and the second driving member are respectively slidably connected to the fixed seat in the radial direction;

[0040] The first driving member is located on one side of the locking block and is used to abut against the first inclined surface, and the second driving member is located on the other side of the locking block and is used to abut against the second inclined surface;

[0041] The driving bolt passes through the inside of the first driving member and is threadedly connected to the second driving member. The driving bolt is used to drive the first driving member and the second driving member to move towards each other during the screwing process, so that the first driving member abuts tightly against the first inclined surface and the second driving member abuts tightly against the second inclined surface, thereby driving the locking block to move towards the ball head.

[0042] After adopting the above technical solution, the surgical instrument is placed between the fixed clamping block and the movable clamping block, and the clamping nut is screwed to drive the movable clamping block to move towards the fixed clamping block, so that the movable clamping block clamps the surgical instrument on the fixed clamping block. Compared with the prior art, the surgical instrument can be stably clamped, the stability of clamping the surgical instrument is improved, and the accidental dropping of the surgical instrument is avoided. Description of the Drawings

[0043] Figure 1 is a schematic structural view of the clamping pliers of the present invention;

[0044] Figure 2 is an exploded assembly view of the clamping pliers of the present invention;

[0045] Figure 3 is a front view of the clamping pliers of the present invention;

[0046] Figure 4 is a cross-sectional view of the clamping pliers of the present invention;

[0047] Figure 5 is a cross-sectional view of the clamping mechanism of the present invention. Detailed Embodiment

[0048] In order to make the content of the present invention be more clearly understood, the present invention will be further described in detail below according to specific embodiments and in conjunction with the drawings.

[0049] As Figures 1 to 5 shown, a clamping pliers includes a clamping mechanism 100 for clamping a surgical instrument. The clamping mechanism 100 includes a clamping screw 1, a connecting arm 2, a fixed clamping block 3, a movable clamping block 4, and a clamping nut 5;

[0050] The connecting arm 2 is connected to the clamping screw 1;

[0051] The fixed clamping block 3 is connected to the connecting arm 2;

[0052] The movable clamping block 4 is slidably sleeved on the clamping screw 1 and is oppositely arranged with the fixed clamping block 3;

[0053] The clamping nut 5 is threadedly connected to the clamping screw 1. The clamping nut 5 is used to drive the movable clamping block 4 to move towards the fixed clamping block 3 during rotation so that the movable clamping block 4 clamps the surgical instrument on the fixed clamping block 3. Specifically, the surgical instrument is placed between the fixed clamping block 3 and the movable clamping block 4, and the clamping nut 5 is screwed to drive the movable clamping block 4 to move towards the fixed clamping block 3, so that the movable clamping block 4 clamps the surgical instrument on the fixed clamping block 3. Compared with the prior art, the surgical instrument can be stably clamped, the stability of clamping the surgical instrument is improved, and the accidental dropping of the surgical instrument is avoided. In this embodiment, V-shaped grooves for abutting against the surgical instrument are respectively provided on the fixed clamping block 3 and the movable clamping block 4.

[0054] As Figure 1 、 2 、5 shows, a sliding groove 6 may be provided on the movable clamping block 4, and the connecting arm 2 is slidably fitted in the sliding groove 6, so as to prevent the movable clamping block 4 from rotating in the circumferential direction and keep the angle of the movable clamping block 4.

[0055] As Figure 1 、 2 、5 shows, the connecting arm 2 is of a C-shaped structure, and the connecting arm 2 may include a first mounting portion 7, a second mounting portion 8 and an arm body 9;

[0056] One end of the arm body 9 is connected to the first mounting portion 7, and the other end of the arm body 9 is connected to the second mounting portion 8;

[0057] The first mounting portion 7 is connected to one end of the clamping screw 1;

[0058] The fixed clamping block 3 is connected to the second mounting portion 8.

[0059] As Figure 4 、 5 shows, the movable clamping block 4 is rotatably connected to the clamping nut 5; specifically, a rotary joint portion 10 is provided on the clamping nut 5, and an annular groove 11 is provided on the outer side wall of the rotary joint portion 10; one end of the movable clamping block 4 is sleeved on the outside of the rotary joint portion 10, and at least one pin shaft 12 extending into the annular groove 11 is connected to the movable clamping block 4, so that the movable clamping block 4 is rotatably connected to the clamping nut 5.

[0060] As Figures 1 to 5 shows, the clamping forceps may further include a universal connection mechanism 200 and a fixed locking mechanism 300;

[0061] The clamping screw 1 in the clamping mechanism 100 is connected to the universal joint mechanism 200;

[0062] The universal joint mechanism 200 is connected to the fixed locking mechanism 300. The universal joint mechanism 200 is used to lock the position of the clamping mechanism 100 relative to the fixed locking mechanism 300 after the clamping mechanism 100 rotates in all directions relative to the fixed locking mechanism 300 to the in-place position;

[0063] The fixed locking mechanism 300 is used to be tightly connected to an external fixing member. Specifically, the surgical instrument is stably clamped by the fixed clamping block 3 and the movable clamping block 4 in the clamping mechanism 100. The fixed locking mechanism 300 is tightly connected to the external fixing member. The clamping mechanism 100 is rotated in all directions relative to the fixed locking mechanism 300 through the universal joint mechanism 200 to a suitable angular position so that the surgical instrument is placed in a suitable position, and then the position of the clamping mechanism 100 relative to the fixed locking mechanism 300 is locked. At this time, the surgical instrument is fixedly supported, and thus it is not necessary for medical staff to hold the surgical instrument by hand.

[0064] As Figures 1 to 4 shown, the fixed locking mechanism 300 may include a locking seat 13, a clamping block 14, and a clamping screw 15;

[0065] A locking cavity 16 for an external fixing member to extend into is provided in the locking seat 13, and the universal joint mechanism 200 is connected to the locking seat 13;

[0066] The clamping screw 15 is threadedly connected to the locking seat 13, and one end of the clamping screw 15 extends into the locking cavity 16;

[0067] The clamping block 14 is connected to the clamping screw 15 and is located in the locking cavity 16. The clamping screw 15 is used to drive the clamping block 14 to move during the screwing process so that the clamping block 14 presses the external fixing member extending into the locking cavity 16 against the locking seat 13, thereby tightly connecting the entire fixed locking mechanism 300 to the external fixing member.

[0068] As Figures 1 to 5 shown, the universal joint mechanism 200 is, for example but not limited to, the following structure. It includes a base assembly, a universal joint ball 17, a locking block 18, and a locking drive mechanism;

[0069] The base assembly is connected to the fixed locking mechanism 300;

[0070] The clamping screw 1 is connected to the universal joint ball 17;

[0071] The universal joint ball 17 is provided with a ball head 19, and the ball head 19 is rotatably connected in the base assembly in a universal manner;

[0072] The locking block 18 is slidably arranged in the base assembly and is used to abut against one end of the ball head 19, and the base assembly is provided with a locking step 20 that protrudes radially inward and is used to abut against the other end of the ball head 19;

[0073] The locking drive mechanism is connected to the base assembly and is used to drive the locking block 18 to move towards the ball head 19 to press the ball head 19 against the locking step 20, thereby locking the position of the universal joint ball 17 relative to the base assembly, and further locking the position of the clamping mechanism 100 relative to the fixed locking mechanism 300.

[0074] As Figures 1 to 5 shown, the base assembly includes a fixed seat 21 and a rotating seat 22;

[0075] The fixed seat 21 is fixedly connected to the fixed locking mechanism 300; specifically, the fixed seat 21 is connected to the locking seat 13 in the fixed locking mechanism 300;

[0076] The rotating seat 22 is rotatably connected to the fixed seat 21, and the rotating seat 22 is provided with an opening groove 23;

[0077] The universal joint ball 17 further includes a connecting portion 24 and a rod portion 25. One end of the rod portion 25 is connected to the connecting portion 24, the other end of the rod portion 25 is connected to the ball head 19, the clamping screw 1 is connected to the connecting portion 24, the ball head 19 is rotatably connected to the rotating seat 22 in a universal manner, and the rod portion 25 is used to rotate and snap into the opening groove 23;

[0078] The locking block 18 is slidably arranged in the rotating seat 22 and is used to abut against one end of the ball head 19, and the locking step 20 is arranged on the rotating seat 22 and is used to abut against the other end of the ball head 19;

[0079] The locking drive mechanism is connected to the fixed seat 21. The locking drive mechanism is used to drive the locking block 18 to move towards the ball head 19 to press the ball head 19 against the locking step 20, thereby driving the rotating seat 22 to be locked and fixed on the fixed seat 21, so as to lock the position of the universal joint ball 17 relative to the fixed seat 21. Specifically, when the locking drive mechanism drives the locking block 18 to move towards the ball head 19, the locking block 18 can abut against the ball head 19 and press the ball head 19 against the locking step 20. At the same time, the locking step 20 is stressed and the rotating seat 22 abuts against the fixed seat 21, so that the rotating seat 22 is locked and fixed on the fixed seat 21. In this way, the position of the universal joint ball 17 relative to the rotating seat 22 can be locked, and the position of the rotating seat 22 relative to the fixed seat 21 can also be locked. The fixed seat 21 is connected to the fixed locking mechanism 300, and the fixed locking mechanism 300 is locked and fixed to an external fixing member, so as to provide support for the surgical instrument fixed on the clamping mechanism 100.

[0080] As Figures 1 to 5 shown, the locking drive mechanism may include a first driving member 26, a second driving member 27 and a driving bolt 28;

[0081] One side of the locking block 18 is provided with a first inclined surface portion 29, and the other side of the locking block 18 is provided with a second inclined surface portion 30;

[0082] The first driving member 26 and the second driving member 27 are respectively slidably connected in the radial direction in the fixed seat 21;

[0083] The first driving member 26 is located on one side of the locking block 18 and is used to abut against the first inclined surface portion 29, and the second driving member 27 is located on the other side of the locking block 18 and is used to abut against the second inclined surface portion 30;

[0084] The driving bolt 28 passes through the inside of the first driving member 26 and is threadedly connected to the second driving member 27. The driving bolt 28 is used to drive the first driving member 26 and the second driving member 27 to move towards each other during the screwing process, so that the first driving member 26 abuts against the first inclined surface portion 29 and the second driving member 27 abuts against the second inclined surface portion 30, thereby driving the locking block 18 to move towards the ball head 19 to press the ball head 19 against the locking step 20; Specifically, when the driving bolt 28 is rotated in the reverse direction, the first driving member 26 and the second driving member 27 move away from each other, thereby releasing the locking block 18, and the locking block 18 also releases the pressing on the ball head 19, so that the ball head 19 can rotate in all directions.

[0085] In this embodiment, the fixing base 21 includes a base body 31 and a cover body 32. The base body 31 is connected to the locking base 13 in the fixing and locking mechanism 300. The cover body 32 is connected to the base body 31. The rotating base 22 is rotatably connected to the cover body 32. The first driving member 26 and the second driving member 27 are respectively slidably connected in the radial direction in the cover body 32.

[0086] In this embodiment, the external fixing member can be a fixing bracket or a serpentine arm in a surgical gripper. The surgical gripper can be connected to an operating table. The specific structure of the surgical gripper is prior art well-known to those skilled in the art and will not be specifically described in this embodiment.

[0087] In summary, place the surgical instrument between the fixed clamping block 3 and the movable clamping block 4, and turn the clamping nut 5 to drive the movable clamping block 4 to move towards the fixed clamping block 3, so that the movable clamping block 4 clamps the surgical instrument on the fixed clamping block 3. Compared with the prior art, it can stably clamp the surgical instrument, improve the stability of clamping the surgical instrument, and avoid accidental dropping of the surgical instrument.

[0088] In the specific embodiments described above, the technical problems solved, the technical solutions and the beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clamping forceps, characterized in that: It comprises a clamping mechanism (100) for clamping a surgical instrument, wherein the clamping mechanism (100) comprises a clamping screw (1), a connecting arm (2), a fixed clamping block (3), a movable clamping block (4) and a clamping nut (5); The connecting arm (2) is connected to the clamping screw (1); The fixed clamp block (3) is connected to the connecting arm (2); The movable clamping block (4) is slidably sleeved on the clamping screw (1) and is arranged opposite to the fixed clamping block (3); The clamping nut (5) is threadedly connected to the clamping screw (1), and the clamping nut (5) is used to drive the movable clamping block (4) to move toward the fixed clamping block (3) during rotation so that the movable clamping block (4) clamps the surgical instrument on the fixed clamping block (3).

2. The clamping pliers according to claim 1, characterized in that: The movable clamping block (4) is provided with a sliding groove (6), and the connecting arm (2) is slidably fitted in the sliding groove (6).

3. The clamping pliers according to claim 1, characterized in that: The connecting arm (2) is a C-shaped structure, and comprises a first mounting portion (7), a second mounting portion (8) and an arm body (9); One end of the arm body (9) is connected to the first mounting portion (7), and the other end of the arm body (9) is connected to the second mounting portion (8); The first mounting portion (7) is connected to one end of the clamping screw (1); The fixing clamp block (3) is connected to the second mounting portion (8).

4. The clamping pliers according to claim 1, characterized in that: The movable clamping block (4) is rotatably connected to the clamping nut (5).

5. The clamping pliers according to claim 4, characterized in that: The clamping nut (5) is provided with a rotating joint portion (10), and an outer side wall of the rotating joint portion (10) is provided with an annular groove (11); One end of the movable clamping block (4) is sleeved on the outside of the rotary joint portion (10), and the movable clamping block (4) is connected to at least one pin shaft (12) extending into the annular groove (11).

6. The clamping pliers according to claim 1, characterized in that: It also includes a universal connection mechanism (200) and a fixed locking mechanism (300); The clamping screw (1) in the clamping mechanism (100) is connected to the universal connection mechanism (200); The universal connection mechanism (200) is connected to the fixed locking mechanism (300), and the universal connection mechanism (200) is used to lock the position of the clamping mechanism (100) relative to the fixed locking mechanism (300) after the clamping mechanism (100) is universally rotated to a certain position relative to the fixed locking mechanism (300); The fixing locking mechanism (300) is used for locking connection to an external fixing member.

7. The clamping pliers according to claim 6, characterized in that: The fixing and locking mechanism (300) comprises a locking seat (13), a clamping block (14) and a clamping screw (15); The locking seat (13) is provided with a locking cavity (16) for an external fixing member to extend into, and the universal connection mechanism (200) is connected to the locking seat (13); The clamping screw (15) is threadedly connected to the locking seat (13), and one end of the clamping screw (15) extends into the locking cavity (16); The clamping block (14) is connected to the clamping screw (15) and is located in the locking cavity (16). The clamping screw (15) is used to drive the clamping block (14) to move during the screwing process so that the clamping block (14) presses the external fixing part extending into the locking cavity (16) onto the locking seat (13).

8. The clamping pliers according to claim 6, characterized in that: The universal connection mechanism (200) comprises a base assembly, a universal connection ball (17), a locking block (18) and a locking drive mechanism; The base assembly is connected to the fixing and locking mechanism (300); The clamping screw (1) is connected to the universal connection ball (17); The universal connection ball (17) is provided with a ball head (19), and the ball head (19) is universally rotatably connected in the base assembly; The locking block (18) is slidably arranged in the base assembly and is used to abut against one end of the ball head (19); the base assembly is provided with a locking step (20) which protrudes radially inward and is used to abut against the other end of the ball head (19); The locking drive mechanism is connected to the base assembly and is used to drive the locking block (18) to move toward the ball head (19) to press the ball head (19) against the locking step (20) and thereby lock the position of the universal connection ball (17) relative to the base assembly.

9. The clamping pliers according to claim 8, characterized in that: The base assembly comprises a fixed seat (21) and a rotating seat (22); The fixing seat (21) is fixedly connected to the fixing locking mechanism (300); The rotating seat (22) is rotatably connected to the fixed seat (21), and an open groove (23) is provided on the rotating seat (22); The universal connection ball (17) further comprises a connection portion (24) and a rod portion (25), one end of the rod portion (25) being connected to the connection portion (24), and the other end of the rod portion (25) being connected to the ball head portion (19), the clamping screw (1) being connected to the connection portion (24), the ball head portion (19) being universally rotatably connected to the rotating seat (22), and the rod portion (25) being used to rotate until it is inserted into the opening groove (23); The locking block (18) is slidably arranged in the rotating seat (22) and is used to abut against one end of the ball head (19); the locking step (20) is arranged on the rotating seat (22) and is used to abut against the other end of the ball head (19); The locking drive mechanism is connected to the fixing seat (21), and is used to drive the locking block (18) to move toward the ball head (19) to press the ball head (19) onto the locking step (20), thereby driving the rotating seat (22) to be locked and fixed on the fixing seat (21), so as to lock the position of the universal connection ball (17) relative to the fixing seat (21).

10. The clamping pliers according to claim 9, characterized in that: The locking drive mechanism comprises a first drive member (26), a second drive member (27) and a drive bolt (28); A first inclined portion (29) is provided on one side of the locking block (18), and a second inclined portion (30) is provided on the other side of the locking block (18); The first driving member (26) and the second driving member (27) are respectively connected to the fixing seat (21) in a radially sliding manner; The first driving member (26) is located on one side of the locking block (18) and is used to abut against the first inclined portion (29); the second driving member (27) is located on the other side of the locking block (18) and is used to abut against the second inclined portion (30); The driving bolt (28) passes through the inner side of the first driving member (26) and is threadedly connected to the second driving member (27). The driving bolt (28) is used to drive the first driving member (26) and the second driving member (27) to move toward each other during the screwing process, so that the first driving member (26) is pressed against the first inclined surface (29) and the second driving member (27) is pressed against the second inclined surface (30), thereby driving the locking block (18) to move toward the ball head (19).

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