Needle holder
By designing a suture needle clamping device that can adjust the circumferential rotation angle, the problems of skull base defect and cerebrospinal fluid leakage are solved, and the stable clamping and angle adjustment of suture needles are achieved, which improves the success rate and safety of skull base reconstruction.
Patent Information
- Application Number
- CN202421546641.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-02
AI Technical Summary
After intracranial communication or tumor invasion of the dura mater, the skull base defect and cerebrospinal fluid leakage are easily displaced, and the risk of postoperative cerebrospinal fluid leakage and repair failure is high, resulting in an increased risk of intracranial infection.
A suture needle clamping device capable of adjusting the circumferential rotation angle is designed, including a grip, a sleeve, an actuator head and a drive, the execution head clamping is driven by an elastic member and a torsion spring, and the angle of the suture needle is adjusted by a transmission rod and a trolley.
The angle adjustment of the suture needle in vitro was achieved, the clamping force and stability of the suture needle were improved, the risk of cerebrospinal fluid leakage after surgery was reduced, and the success rate of skull base reconstruction was improved.
Smart Images
Figure CN222899191U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, and specifically relates to a needle holder. Background Art
[0002] For tumors that communicate with the skull or invade the dura mater, skull base defects and cerebrospinal fluid leakage may occur after resection. In order to repair the skull base and control cerebrospinal fluid leakage, most of the current procedures use nasal mucosal flaps, fascia lata, muscles, adipose tissue, artificial dura mater and other tissues for multi-layer paving, which can achieve certain results. However, for large defects or slope areas, the displacement of repair materials, postoperative cerebrospinal fluid leakage, and repair failure may still occur. The failure rate of the sellar region and anterior skull base is about 2%-2.5%, while the failure rate of the slope area can reach 16%. The main reasons are that the repair materials in the slope area are easily affected by gravity and shifted downward, the cerebrospinal fluid pressure is high, and the area is difficult to fill and support. Once postoperative cerebrospinal fluid leakage occurs, nasal bacteria can retrograde into the skull, leading to intracranial infection, significantly increasing the risk of meningitis and brain abscess, and endangering the patient's life in severe cases. Therefore, the problems of improving the success rate of repair and reducing the occurrence of postoperative cerebrospinal fluid leakage need to be solved urgently.
[0003] During craniotomy reconstruction, continuous suturing of the dura mater is a routine operation, and the incidence of postoperative cerebrospinal fluid leakage is low. Therefore, the use of suturing technology in endoscopic transnasal skull base reconstruction is expected to significantly improve the success rate of skull base reconstruction. However, the endoscopic transnasal operation space is small, the skull base defect site is different, and the required suturing angle is also different, which brings great difficulties to the operation.
[0004] Therefore, a suture needle clamping device capable of adjusting the circumferential rotation angle is designed, and the clamping device is specifically a needle holder. Utility Model Content
[0005] In order to overcome the problems raised in the background technology, the utility model adopts the following technical solutions:
[0006] A needle holder comprises a handle 1, a sleeve, an actuator head and a driving part; a cavity 1 is arranged inside the handle 1; the sleeve is connected to the handle 1, and a cavity 2 is arranged inside the sleeve; the actuator head is clamped when not subjected to external force, and the actuator head and the handle 1 are respectively connected to the opposite ends of the sleeve; the driving part comprises a handle 2, an elastic member, and a traction line, the handle 2 is rotatably connected to the handle 1, the two ends of the elastic member are respectively connected to the handle 2 and the handle 1 and can maintain the handle 2 in an initial position, the two ends of the traction line are respectively connected to the actuator head and the handle 2, when the handle 2 is in the initial position, the traction line drives the actuator head to open, and when the handle 2 rotates toward the handle 1, it drives the traction line to overcome the pulling force of the elastic member and clamp the actuator head.
[0007] Furthermore, a torsion spring is arranged in the executing clamp head, and the torsion spring drives the executing clamp head to clamp when no external force is applied. The force of the torsion spring driving the executing clamp head to rotate is smaller than the force of the elastic member pulling the executing clamp head apart.
[0008] Furthermore, a needle outlet end is provided at one end of the sleeve connected to the executing forceps head, and a cavity three is provided through the needle outlet end. The cavity three is connected to the cavity two, and the inner diameter of the cavity three is smaller than the inner diameter of the cavity two to prevent the suture needle from escaping from the cavity three before the suturing operation begins.
[0009] Furthermore, the handle 2 rotates around an axis, and the handle 2 includes a driven end and a driving end, the driven end and the driving end are located on both sides of the axis, and the traction line and the elastic member are both connected to the driven end.
[0010] Furthermore, when the active end rotates toward handle 1, the driven end rotates toward the sleeve in cavity 1. At this time, the actuator clamp head connected to the traction line is not driven by the elastic member and is clamped, and the elastic member stores energy.
[0011] Furthermore, the driving part also includes a transmission rod and a toggle plate, the toggle plate is rotationally connected to the cavity 2, one end of the transmission rod is connected to the driven end, when the handle 2 is in the initial position, the end of the transmission rod away from the handle 2 is in the cavity 2 and contacts with one end of the toggle plate, at this time, one end of the toggle plate is connected to the inside of the cavity 2, and the other end of the toggle plate is separated from the cavity 2 through the probe port, when the handle 2 rotates toward the handle 1, the end of the transmission rod away from the handle 2 pushes the toggle plate to rotate into the cavity 2. At this time, the toggle plate pushes the suture needle into the cavity 3 under the drive of the transmission rod, and has a tendency to push the suture needle from the cavity 3 to the outside of the needle outlet end, and as the toggle plate is pushed back to the cavity 2, the suture needle is gradually pushed out of the cavity 3.
[0012] Furthermore, the handle 2 moves around an axis, the cavity 3 has an arc, the cavity 3 is adapted to a suture needle, the bending angle of the suture needle is 90° to 120°, and the angle of the cavity 3 is not greater than 70°.
[0013] Furthermore, after the sleeve is connected to the handle, it can rotate circumferentially around its own central axis, so that the needle holding angle of the forceps head can be adjusted by rotating the sleeve.
[0014] Furthermore, a threaded hole connected to cavity one is provided on the outer wall of the handle one, and a positioning bolt is connected to the threaded hole. When the positioning bolt enters cavity one through the threaded hole, it squeezes the outer wall of the sleeve, so that the sleeve can be positioned at any rotation angle, thereby realizing multi-angle fixation of the execution pliers head.
[0015] Furthermore, there are two executing pliers heads, which are arranged in a mirror-like manner. The traction wire passes through the sleeve and is connected to the outer wall of the executing pliers heads. When the elastic member pulls the traction wire, the position of the rotating shaft around which the executing pliers heads are wound remains unchanged, but the position where the executing pliers heads are connected to the traction wire is close to the elastic member, so that the executing pliers heads are opened.
[0016] Furthermore, both the first handle and the second handle are provided with grip rings so that the user can grip them firmly.
[0017] Beneficial effects of the utility model:
[0018] 1. By providing an elastic member and an execution clamp head that is clamped when not subjected to external force, when the active end of the handle 2 moves toward the handle 1, the pulling force applied to the execution clamp head by the elastic member through the traction line can be offset, so that the execution clamp head is re-clamped under the action of the torsion spring, and by providing a transmission rod and a toggle plate, when the active end of the handle 2 moves toward the handle 1, the driven end drives the suture needle to extend from the needle outlet end and be clamped by the execution clamp head, so that the suture needle can be pushed out and clamped by holding the handle 1 and the handle 2 at one time, which has excellent practical effect.
[0019] 2. By setting a positioning bolt, the sleeve can be positioned at any rotation angle, so as to achieve multi-angle fixation of the execution forceps head, thereby enabling the angle adjustment of the suture needle in vitro. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model when the handle 2 is in the initial position;
[0022] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;
[0023] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of ;
[0024] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at B in the middle;
[0025] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;
[0026] Figure 6 for Figure 3 Schematic diagram of the enlarged structure at D in the middle;
[0027] Figure 7 It is a schematic diagram of the overall structure of the utility model when the handle 2 is separated from the initial position and rotated toward the handle 2;
[0028] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at E in the middle;
[0029] Fig. 9 for Figure 7 Schematic diagram of the assembly structure of the middle traction line and the execution clamp head;
[0030] In the figure, 1. handle one; 11. cavity one; 12. threaded hole; 13. positioning bolt; 14. holding ring; 2. sleeve; 21. cavity two; 211. probe port; 3. execution forceps head; 31. groove; 4. driving part; 41. handle two; 411. active end; 412. driven end; 42. elastic part; 43. traction line; 44. transmission rod; 45. toggle plate; 5. needle outlet end; 51. cavity three; 6. suture needle. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. 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] A needle holder, such as Figure 1-9As shown, it includes a handle 1, a sleeve 2, an execution clamp head 3 and a driving part 4; a cavity 11 is arranged inside the handle 1; the sleeve 2 is connected to the handle 1, and a cavity 21 is arranged inside the sleeve 2; the execution clamp head 3 is clamped when not subjected to external force, and the execution clamp head 3 and the handle 1 are respectively connected to the opposite ends of the sleeve 2; the driving part 4 includes a handle 2 41, an elastic member 42, and a traction line 43; the handle 2 41 is rotatably connected to the handle 1, the two ends of the elastic member 42 are respectively connected to the handle 2 41 and the handle 1 and can maintain the handle 2 41 in an initial position, the two ends of the traction line 43 are respectively connected to the execution clamp head 3 and the handle 2 41, when the handle 2 41 is in the initial position, the traction line 43 drives the execution clamp head 3 to open, and when the handle 2 41 rotates toward the handle 1, it drives the traction line 43 to overcome the pulling force of the elastic member 42 and clamps the execution clamp head 3.
[0033] In some embodiments of the present application, Figure 1-9 As shown, a torsion spring is arranged inside the executing clamp head 3 , and the torsion spring drives the executing clamp head 3 to clamp when no external force is applied. The force of the torsion spring driving the executing clamp head 3 to rotate is smaller than the force of the elastic member 42 pulling the executing clamp head 3 apart.
[0034] In some embodiments of the present application, Figure 1-9 As shown, one end of the sleeve 2 connected to the executing forceps head 3 is provided with a needle outlet end 5, and the needle outlet end 5 is penetrated by a cavity three 51, and the cavity three 51 is connected with the cavity two 21. The inner diameter of the cavity three 51 is smaller than the inner diameter of the cavity two 21 to prevent the suture needle 6 from escaping from the cavity three 51 before the suturing operation begins.
[0035] In some embodiments of the present application, Figure 1-9 As shown, the second handle 41 rotates around an axis. The second handle 41 includes a driven end 412 and a driving end 411 . The driven end 412 and the driving end 411 are located on both sides of the axis. The traction line 43 and the elastic member 42 are both connected to the driven end 412 .
[0036] In some embodiments of the present application, Figure 1-9 As shown, when the active end 411 rotates toward the handle 1, the driven end 412 rotates toward the sleeve 2 in the cavity 11. At this time, the actuator head 3 connected to the traction line 43 is not driven by the elastic member 42 and is clamped, and the elastic member 42 stores energy.
[0037] In some embodiments of the present application, Figure 1-9As shown, the driving part 4 also includes a transmission rod 44 and a toggle plate 45, the toggle plate 45 is rotatably connected to the cavity 21, one end of the transmission rod 44 is connected to the driven end 412, when the handle 2 41 is in the initial position, the end of the transmission rod 44 away from the handle 2 41 is in the cavity 2 21 and contacts with one end of the toggle plate 45, at this time, one end of the toggle plate 45 is connected to the inside of the cavity 2 21, and the other end of the toggle plate 45 is separated from the cavity 2 21 through the probe port 211, when the handle 2 41 rotates toward the handle 1 1, the end of the transmission rod 44 away from the handle 2 41 pushes the toggle plate 45 to rotate into the cavity 2 21. At this time, the toggle plate 45 pushes the suture needle 6 into the cavity 3 51 under the drive of the transmission rod 44, and has a tendency to push the suture needle 6 from the cavity 3 51 to the outside of the needle outlet 5, and as the toggle plate 45 is pushed back into the cavity 2 21, the suture needle 6 is gradually pushed out of the cavity 3 51. The second handle 41 moves around an axis, the cavity three 51 has an arc, the cavity three 51 is adapted to the suture needle 6, the bending angle of the suture needle 6 is 90° to 120°, and the angle of the cavity three 51 is not greater than 70°.
[0038] In some embodiments of the present application, Figure 1-9 As shown, after the sleeve 2 is connected to the handle 1, it can rotate circumferentially around its own central axis, so that the needle holding angle of the execution clamp head 3 can be adjusted by rotating the sleeve 2. A threaded hole 12 connected to the cavity 11 is provided on the outer wall of the handle 1, and a positioning bolt 13 is connected in the threaded hole 12. When the positioning bolt 13 enters the cavity 11 through the threaded hole 12, it squeezes the outer wall of the sleeve 2, so that the sleeve 2 can be positioned at any rotation angle, and the execution clamp head 3 can be fixed at multiple angles. The execution clamp head 3 is also provided with a groove 31 on the opposite side when tightening. The grooves 31 on the two mirror-image execution clamp heads 3 can form a channel adapted to the suture needle 6 when the execution clamp head 3 is closed, so that the suture needle 6 can extend out of the execution clamp head 3 through the channel.
[0039] In some embodiments of the present application, Figure 1-9 As shown, there are two execution forceps heads 3, which are mirror-imaged, and the traction line 43 passes through the sleeve 2 and is connected to the outer wall of the execution forceps head 3. When the elastic member 42 pulls the traction line 43, the position of the rotating shaft around which the execution forceps head 3 is wound remains unchanged, but the position where the execution forceps head 3 is connected to the traction line 43 is close to the elastic member 42, so that the execution forceps head 3 is opened. The gripping handle 1 and the gripping handle 2 41 are both provided with a gripping ring 14 so that the user can firmly hold the needle holder. The number of gripping rings 14 on the gripping handle 1 is not less than one, and the number of gripping rings 14 on the gripping handle 2 41 is not less than one. The gripping ring 14 allows the user's thumb to pass through, and can be stably held by most users of different body shapes.
[0040] In other embodiments of the present application, the handle 1 is ball-jointed or rotationally connected to the sleeve 2. Through this arrangement, the sleeve 2 can rotate around the central axis of the cavity 11 in the handle 1, and the central axis of the sleeve 2 can form a variety of different angles with the central axis of the cavity 11 in the handle 1, which is conducive to flexible adjustment of the posture relationship between the sleeve 2 and the handle 1 before surgery.
Claims
1. A needle holder, characterized in that: include: A handle 1, wherein a cavity 1 is arranged inside the handle; A sleeve connected to the first handle, wherein a second cavity is provided inside the sleeve, and an exploration port is provided on the outer wall of the second cavity; An execution clamp head, which is clamped when not subjected to external force, and the execution clamp head and the handle are respectively connected to opposite ends of the sleeve; The driving part includes a second handle, an elastic member, and a traction line. The second handle is rotatably connected to the first handle. The two ends of the elastic member are respectively connected to the second handle and the first handle and can maintain the second handle in an initial position. The two ends of the traction line are respectively connected to the execution clamp head and the second handle. When the second handle is in the initial position, the traction line drives the execution clamp head to open. When the second handle rotates toward the first handle, the traction line is driven to overcome the tension of the elastic member and clamp the execution clamp head.
2. A needle holder according to claim 1, characterized in that: The end of the sleeve connected to the execution forceps head is provided with a needle outlet end, and the needle outlet end is penetrated by a cavity three, the cavity three is connected with the cavity two, and the inner diameter of the cavity three is smaller than the inner diameter of the cavity two.
3. A needle holder according to claim 2, characterized in that: The second handle rotates around an axis, and the second handle includes a driven end and a driving end, the driven end and the driving end are located on both sides of the axis, and the traction line and the elastic member are both connected to the driven end.
4. A needle holder according to claim 3, characterized in that: When the active end rotates toward the handle 1, the driven end rotates toward the sleeve in the cavity 1. At this time, the executing clamp head connected to the pulling line is not driven by the elastic member and is clamped.
5. The needle holder according to claim 4, characterized in that: The driving part also includes a transmission rod and a toggle plate, the toggle plate is rotationally connected to the second cavity, one end of the transmission rod is connected to the driven end, when the second handle is in the initial position, the end of the transmission rod away from the second handle is in the second cavity and contacts one end of the toggle plate, at this time, one end of the toggle plate is connected to the inside of the second cavity, and the other end of the toggle plate is separated from the second cavity through the probe port, when the second handle rotates toward the first handle, the end of the transmission rod away from the second handle pushes the toggle plate into the second cavity.
6. The needle holder according to claim 5, characterized in that: The handle 2 moves around an axis, and the cavity 3 has an arc.
7. The needle holder according to claim 1, characterized in that: After the sleeve is connected to the handle, it can rotate circumferentially around its own central axis.
8. The needle holder according to claim 7, characterized in that: A threaded hole connected to the cavity one is provided on the outer wall of the handle one, and a positioning bolt is connected in the threaded hole. When the positioning bolt enters the cavity one through the threaded hole, it presses the outer wall of the sleeve.
9. The needle holder according to claim 1, characterized in that: The number of the executing clamp heads is two, and the two executing clamp heads are arranged in a mirror image. The traction line passes through the sleeve and is connected to the outer wall of the executing clamp head.
10. The needle holder according to claim 1, characterized in that: The first handle and the second handle are both provided with a holding ring.