A type of bone-biting forceps

Abstract

This utility model discloses a bone-biting forceps, relating to the technical field of medical devices, including a cutting device. The cutting device comprises a fixed tube with an abutment groove on its side wall, and a cutting blade inside the fixed tube. The cutting blade slides along the axial direction of the fixed tube to extend into or retract from the abutment groove into the fixed tube. An abutment device is provided within the abutment groove, comprising: a mounting plate with mutually perpendicular and communicating mounting grooves and connecting grooves on adjacent sides; the mounting plate is located on the side of the abutment groove away from the cutting blade, so that the mounting groove faces the cutting blade; a mounting rod passes through the connecting groove and the mounting groove, and can slide and extend along the opening direction of the connecting groove; a support tube is fixed to the mounting rod; the support rod passes through the support tube and is slidably connected to the support tube; the abutment plate and the support rod are rotatably connected. This utility model has a reasonable design structure, which can provide fixation for the bone during bone removal, achieving a more stable connection between the bone-biting forceps and the bone.

Description

Technical Field

[0001] This utility model relates to the technical field of medical equipment, specifically a bone-biting forceps. Background Technology

[0002] Bone forceps are a commonly used surgical instrument, mainly used in neurosurgery, orthopedics and other surgeries. They are primarily used to remove dead bone or trim bone fragments so that the bone conforms to the desired shape, facilitating subsequent procedures by medical staff.

[0003] In the prior art, bone-biting forceps include upper and lower clamping bars that can move in translation. The rear section of one clamping bar is bent to the side and downward to form a rear handle. The front handle is connected to the rear end of another clamping plate through a hinge, with the rear handle as the fulcrum. A support spring is provided between the front and rear handles. The mating surfaces of the upper and lower clamping plates are all machined with guide grooves and guide blocks that match the other clamping plate in a segmented manner. When using bone-biting forceps to clean bone, manual pressure is usually applied to the forceps to complete the bone cleaning operation. However, using manual forceps will cause the position of the forceps to shift to a certain extent, which will affect the cutting effect. Utility Model Content

[0004] 1) Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a bone-biting forceps.

[0006] (ii) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a bone-biting forceps, comprising a cutting device, characterized in that: the cutting device comprises a fixed tube with an abutment groove on its side wall, and a cutting blade is provided inside the fixed tube; the cutting blade slides along the axial direction of the fixed tube to extend into the abutment groove or retract from the abutment groove into the fixed tube.

[0008] The abutment groove is provided with an abutment device, the abutment device comprising:

[0009] The mounting plate has mounting grooves and connecting grooves that are perpendicular to each other and connected on its adjacent sides. The mounting plate is located on the side wall of the abutment groove and away from the cutting blade, so that the mounting groove faces the cutting blade.

[0010] The mounting rod passes through the connecting groove and the mounting groove, and can slide telescopically along the opening direction of the connecting groove;

[0011] The support tube is fixed to the mounting rod;

[0012] A support rod, which passes through the support tube and is slidably connected to the support tube;

[0013] An abutment plate, which is rotatably connected to the support rod.

[0014] Furthermore, the end face of the abutment plate away from the support rod is provided with a fitting pad.

[0015] Furthermore, the inner cavity of the support tube is provided with a spring, and the two ends of the spring are fixedly connected to the mounting rod and the support rod, respectively.

[0016] Furthermore, the mounting rod is provided with a fixing groove, and a cam is provided in the fixing groove. The cam and the mounting rod are rotatably connected, and the rotation axis of the cam is parallel to the long side of the mounting rod.

[0017] Furthermore, a fixing plate is provided in the abutment groove, the fixing plate is provided with a plug groove, and an installation block is slidably connected in the plug groove, the installation block and the installation plate are fixedly connected.

[0018] Furthermore, the fixed tube is equipped with a suction device, which includes a suction tube and a suction device, with both ends of the suction tube connected to the fixed tube and the suction device, respectively.

[0019] Furthermore, the fixing tube is provided with a laser indicator at the abutment groove, and the light source of the laser indicator is pointed in the direction of travel of the cutting blade tip.

[0020] (iii) Beneficial effects:

[0021] Compared with existing technologies, this bone-biting forceps has the following advantages:

[0022] I. By setting up an abutment device, the operator can adjust the position of the abutment plate and the fitting pad by changing the position of the mounting rod relative to the fixed tube, thereby better abutting against the bone and preventing bone displacement during cutting, which would reduce the stability of the cutting and affect subsequent treatment.

[0023] Second, by setting a laser indicator, this utility model makes it easier for operators to mark the cutting position, thus improving the accuracy of cutting. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic cross-sectional view of the fixed tube in this utility model;

[0026] Figure 3 This is a schematic diagram of the abutment device structure in this utility model;

[0027] Figure 4 This is a schematic cross-sectional view of the mounting rod in this utility model.

[0028] In the diagram: 1. Gun body; 11. Handheld part; 12. Pressing part; 13. Through hole; 2. Cutting device; 21. Fixing tube; 22. Rail; 23. Abutment groove; 24. Support plate; 25. Reinforcing rib; 26. Connector; 27. Electric push rod; 28. Cutting blade; 29. ​​Laser pointer; 3. Abutment device; 31. Fixing plate; 32. Insertion groove; 33. Mounting block; 331. Set screw; 34. Mounting plate; 341. Mounting groove; 342. Connecting groove; 35. Mounting rod; 351. Fixing groove; 352. Handwheel; 353. Cam; 36. Clamping part; 361. Support tube; 362. Support rod; 363. Spring; 364. Abutment plate; 365. Adhesive pad; 4. Suction device; 41. Suction tube; 42. Suction device. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figure 1-4 As shown, this utility model provides a technical solution: a bone-biting pliers, including a gun body 1, a cutting device 2, an abutting device 3, and a suction device 4.

[0031] Reference Figure 1 In this embodiment, the gun body 1 includes a handheld part 11 and a pressing part 12. The handheld part 11 includes a gripping part and a fixing part. In this embodiment, the handheld part 11 is gun-shaped. The fixing part has a through hole 13 extending along its long side. The pressing part 12 is located at the connection between the handheld part 11 and the pressing part 12, and the pressing part 12 is rotatably connected to the handheld part 11 by means of a torsion spring connection.

[0032] Reference Figure 1 The pressing part 12 is equipped with a sensing element, and the sensing element and the pressing part 12 are fixedly connected. In this embodiment, the sensing element generates a certain electrical signal when the pressing part 12 is close to the gripping part.

[0033] Reference Figure 1 In this embodiment, both the hand-held part 11 and the pressing part 12 are ergonomically designed.

[0034] Operators can press the pressing part 12 to drive the relevant structure to perform the corresponding bone removal operation.

[0035] Reference Figure 1 The inner cavity of the through hole 13 is provided with a cutting device 2, which includes a fixing tube 21. In this embodiment, the fixing tube 21 is preferably a hollow circular rod. The fixing tube 21 passes through the through hole 13 and is coaxially arranged with the through hole 13. The fixing tube 21 and the fixing part are fixedly connected, and the end of the fixing tube 21 extends to the outside of the fixing part. The inner wall of the fixing tube 21 is provided with a track 22. In this embodiment, the track 22 is preferably a T-shaped track 22. The long side of the track 22 is parallel to the axial direction of the fixing tube 21, and the track 22 and the fixing tube 21 are fixedly connected.

[0036] Reference Figure 2 The end of the fixing tube 21 away from the fixing part is provided with an abutment groove 23. In this embodiment, the abutment groove 23 is preferably a rectangular groove. The inner cavity of the abutment groove 23 is provided with a support plate 24 and a reinforcing rib 25. The plane of the support plate 24 is perpendicular to the axial direction of the fixing tube 21. The support plate 24 and the fixing tube 21 are fixedly connected. The reinforcing rib 25 is preferably a right-angled triangular plate. The two right-angled sides of the reinforcing rib 25 are fixedly connected to the support plate 24 and the fixing tube 21 respectively.

[0037] The setting of the fixing tube 21 provides installation space for the setting of the abutment groove 23. At the same time, the setting of the abutment groove 23 provides a receiving area for the bone resection of the related band, making it convenient for the operator to fix the bone segment.

[0038] Reference Figure 2 The cutting device 2 also includes a connector 26 and an electric push rod 27. The connector 26 is equipped with a connecting block, which is matched with the track 22. The connecting block can slide along the long side of the track 22. The connector 26 is fixedly connected to the connecting block by screws. The electric push rod 27 is fixedly connected to the fixed tube 21 by screws, and the driving direction of the electric push rod 27 is parallel to the axial direction of the fixed tube 21. The output end of the electric push rod 27 is connected to the connector 26 by screws.

[0039] Reference Figure 2 The cutting device 2 also includes a cutting blade 28, which is fixedly connected to the connector 26 by screws.

[0040] Reference Figure 2 A laser indicator 29 is provided at the cutting blade 28 on the fixed tube 21. The laser indicator 29 is rotatably connected to the fixed tube 21 through an electrically controlled hinge seat. The laser indicator 29 can mark the position of the tip of the blade of the cutting blade 28.

[0041] The operator drives the electric push rod 27 to move the cutting blade 28 along the slide to remove bone.

[0042] Reference Figure 3 The sensing element, electric push rod 27 and laser pointer 29 installed on the pressing part 12 are electrically connected.

[0043] Reference Figure 3 The abutment device 3 is installed on the end face of the fixing plate 31 near the cutting blade 28.

[0044] Reference Figure 3 The abutment device 3 includes a fixing plate 31, which is fixedly connected to a support plate 24. The fixing plate 31 has an insertion groove 32, the axis of which is parallel to the axis of the abutment groove 23, and the long side of which is parallel to the opening of the abutment groove 23. The inner cavity of the insertion groove 32 has a mounting block 33 and a mounting plate 34. The mounting block 33 can slide along the axis of the insertion groove 32. The mounting block 33 is equipped with a set screw 331, which is used to fix the mounting block 33 to the fixing plate 31. The mounting plate 34 is located on the side of the fixing plate 31 near the electric push rod 27. The surface of the mounting plate 34 is parallel to the fixing plate 31, and the mounting plate 34 and the mounting block 33 are fixedly connected.

[0045] Reference Figure 3 The top wall of the mounting plate 34 is provided with a mounting groove 341, and the side wall of the mounting groove 341 is provided with a connecting groove 342, and the side wall of the mounting groove 341 and the inner cavity of the connecting groove 342 are connected.

[0046] Reference Figure 3 and Figure 4 The abutment device 3 also includes multiple mounting rods 35, which are arranged sequentially along the long side of the connecting groove 342. The mounting rods 35 can slide along the axis of the connecting groove 342. The long side of the mounting rods 35 is parallel to the axis of the abutment groove 23. The top wall of the mounting rods 35 is provided with a fixing groove 351. The inner cavity of the fixing groove 351 is provided with a locking assembly. The locking assembly includes a handwheel 352 and a cam 353. The handwheel 352 and the cam 353 are arranged sequentially along the long side of the mounting rods 35. The handwheel 352 is located outside the fixing groove 351, and the cam 353 is located inside the fixing groove 351. The handwheel 352 and the cam 353 are coaxially fixedly connected by a connecting shaft. Both the handwheel 352 and the cam 353 are rotatably connected to the mounting rods 35.

[0047] Reference Figure 3 and Figure 4 In this embodiment, when the cam 353 is at its maximum stroke, the sidewall of the cam 353 is in contact with the top wall of the mounting plate 34.

[0048] Reference Figure 3 and Figure 4The top wall of the mounting rod 35 is provided with a plurality of abutting members 36 at intervals. The plurality of abutting members 36 are arranged sequentially along the long side of the mounting rod 35. The abutting member 36 includes a support tube 361, a support rod 362 and a spring 363. The support tube 361 is preferably a cylindrical tube. The support tube 361 is vertically arranged and is fixedly connected to the mounting rod 35 by screws. The support rod 362 passes through the inner cavity of the fixing tube 21. The spring 363 is located in the inner cavity of the support tube 361. The two ends of the spring 363 are fixedly connected to the support rod 362 and the support tube 361 respectively.

[0049] Reference Figure 3 and Figure 4 The clamping member 36 also includes an abutment plate 364, which is rotatably connected to the top of the support rod 362 via a ball joint.

[0050] Reference Figure 3 and Figure 4 The end of the abutment plate 364 away from the support rod 362 is provided with a fitting pad 365, and the fitting pad 365 and the abutment plate 364 are fixedly connected.

[0051] The operator can install a suitable mounting plate 34 according to the type and location of the bone. Mounting rods 35 of different sizes are installed on the mounting plate 34. The position of the mounting rods 35 is fixed by the cam 353. Then, the position of the abutment plate 364 is adjusted by the spring 363 to complete the fixation of the bone. Then, the cutting blade 28 cuts the bone.

[0052] Reference Figure 3 and Figure 4 The suction device 4 includes a suction tube 41 and a suction device 42. The suction tube 41 and the fixed tube 21 are coaxially and fixedly connected, and the inner cavities of the suction tube 41 and the fixed tube 21 are connected. The inner cavity of the suction device 42 and the suction tube 41 are also connected.

[0053] The working principle of a bone biting forceps is as follows: the operator first installs a suitable size mounting plate 34 according to the position and size of the bone, and fixes the mounting plate 34 to the fixing plate 31. Then, the position of the mounting rod 35 is adjusted, and the position of the mounting rod 35 is fixed by the cam 353.

[0054] The operator places the fixation tube 21 on the bone, positioning the bone within the fixation groove 351 and abutting the abutment plate 364. The abutment plate 364 rotates at a certain angle to better fit the bone, thus fixing it in place. Subsequently, the electric push rod 27 drives the cutting blade 28 to slide, thereby cutting the bone. The cut bone is then processed by the suction device 42 to avoid affecting the surgical environment.

Claims

1. Rongeur comprising a cutting device (2), characterized in that: The cutting device (2) includes a fixed tube (21) with an abutment groove (23) on its side wall, and a cutting blade (28) is provided inside the fixed tube (21). The cutting blade (28) slides along the axial direction of the fixed tube (21) to extend into the abutment groove (23) or retract from the abutment groove (23) into the fixed tube (21). The abutment groove (23) is provided with an abutment device (3), the abutment device (3) comprising: Mounting plate (34), wherein mounting groove (341) and connecting groove (342) are provided on adjacent sides of the mounting plate (34) and are perpendicular to each other and connected. The mounting plate (34) is located on the side wall of the abutment groove (23) and away from the cutting blade (28) so that the mounting groove (341) faces the cutting blade (28). Mounting rod (35) passes through the connecting groove (342) and the mounting groove (341), and can slide telescopically along the opening direction of the connecting groove (342); The support tube (361) is fixed to the mounting rod (35); A support rod (362) passes through the support tube (361) and is slidably connected to the support tube (361); Abutting plate (364) is rotatably connected to the supporting rod (362).

2. The rongeur according to claim 1, wherein: The end face of the abutment plate (364) away from the support rod (362) is provided with a fitting pad (365).

3. The rongeur according to claim 1, wherein: The inner cavity of the support tube (361) is provided with a spring (363), and the two ends of the spring (363) are fixedly connected to the mounting rod (35) and the support rod (362) respectively.

4. The rongeur according to claim 1, wherein: The mounting rod (35) is provided with a fixing groove (351), and a cam (353) is provided in the fixing groove (351). The cam (353) and the mounting rod (35) are rotatably connected, and the rotation axis of the cam (353) is parallel to the long side of the mounting rod (35).

5. A bone-biting forceps according to claim 1, characterized in that: The abutment groove (23) is provided with a fixing plate (31), the fixing plate (31) is provided with a plug groove (32), the plug groove (32) is slidably connected with an installation block (33), and the installation block (33) and the installation plate (34) are fixedly connected.

6. The rongeur according to claim 1, wherein: The fixed tube (21) is equipped with a suction device (4), which includes a suction tube (41) and a suction device (42). The two ends of the suction tube (41) are respectively connected to the fixed tube (21) and the suction device (42).

7. The rongeur according to claim 1, wherein: The fixed tube (21) is provided with a laser pointer (29) at the abutment groove (23), and the light source of the laser pointer (29) is directed in the direction of travel of the tip of the cutting blade (28).

Images