Puncture tool

Abstract

The utility model discloses a puncture tool. The puncture tool comprises an injection needle tube and a working sleeve, the injection needle tube is of a hollow tubular structure, one end of the injection needle tube is of a needle point structure, a puncture assembly is arranged at a tube opening of one end of the working sleeve, a hole is formed in the side wall of the puncture assembly, and the injection needle tube is sleeved with the working sleeve. One end of the needle point structure of the injection needle tube is inserted into the working sleeve from the tube opening of the end, not provided with the puncture assembly, of the working sleeve and penetrates out of the tube opening of the end, provided with the puncture assembly, of the working sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of medicine, in particular to a puncture tool. Background Art

[0002] At present, with the continuous development of medical technology, vertebroplasty tools are gradually being used in clinical surgery and have a vital impact on the surgical results.

[0003] The existing vertebroplasty tool consists of a needle core and a sleeve sleeved on the outside of the needle core, wherein the needle core is used to puncture the designated vertebra (such as the lesion of the spine), and the sleeve sleeved on the outside of the needle core is used to provide a filling channel to facilitate the subsequent injection of filling materials such as bone cement. At present, when performing vertebroplasty, it is necessary to first use a syringe to inject anesthetics into the skin tissue near the designated vertebra (such as the lesion of the spine). Then, the needle core in the vertebroplasty tool is used to puncture into the designated vertebra (such as the lesion of the spine), and after the puncture is completed, the needle core is pulled out and bone cement and other filling materials are injected into the sleeve.

[0004] However, in order to ensure the accuracy of the anesthetic injection position and the puncture position, this method requires a fluoroscopic examination of the position of the syringe needle during the injection process. Moreover, after the injection is completed, another fluoroscopic examination is required during the puncture process to determine the position of the designated vertebra. Among them, multiple fluoroscopy will make the operation time-consuming, and the radiation generated by multiple fluoroscopy will bring greater risks to doctors and patients. In addition, the existing split vertebroplasty tools have a single channel, which will cause the injected bone cement to flow in a single direction, and then cause the bone cement to be unevenly distributed inside the designated vertebra, resulting in poor surgical results. Utility Model Content

[0005] The utility model provides a puncture tool to partially solve the above problems existing in the prior art.

[0006] The utility model adopts the following technical solutions:

[0007] The utility model provides a puncture tool, which comprises: an injection needle tube and a working sleeve;

[0008] The injection needle tube is a hollow tubular structure, and one end of the injection needle tube is a needle tip structure;

[0009] A puncture assembly is provided at the tube opening at one end of the working sleeve, and a hole is provided on the side wall of the puncture assembly;

[0010] The working sleeve is sleeved on the injection needle tube, wherein one end of the needle tip structure of the injection needle tube is inserted into the working sleeve from the tube opening at the end of the working sleeve where the puncture assembly is not provided, and passes through the tube opening at the end where the puncture assembly is provided.

[0011] Optionally, the outer tube wall at the tube opening of the end of the injection needle tube not provided with the needle tip structure is in a nut shape.

[0012] Optionally, the puncture assembly of the working sleeve is in the shape of a hollow triangular pyramid.

[0013] Optionally, three pyramidal sides of the puncture assembly are provided with holes.

[0014] Optionally, the tip of the puncture assembly consists of two symmetrical triangular tips arranged side by side.

[0015] Optionally, the end of the working sleeve that is not provided with the puncture assembly is provided with a handle, and the handle is provided with a through hole for inserting the injection needle into the working sleeve.

[0016] Optionally, the handle is a trapezoidal structure, and the through holes are provided on the upper and lower bottoms of the handle of the trapezoidal structure.

[0017] Optionally, an external thread is provided on the outer tube wall of the injection needle tube, and an internal thread matching the external thread is provided on the inner wall of the working sleeve.

[0018] Optionally, the external thread is provided on the outer tube wall near the tube opening of the end of the injection needle tube where the needle tip structure is not provided.

[0019] Optionally, an external thread is provided near the tube opening of the working sleeve where the puncture assembly is provided.

[0020] It can be seen from the above that in the process of clinical surgery using the puncture tool provided by the utility model, anesthetics can be injected through the injection needle in the puncture tool. After the injection of anesthetics is completed, the puncture tool can be used to puncture the vicinity of the designated vertebra (such as the lesion of the spine), and the injection needle is pulled out. Then, the puncture assembly of the working sleeve is punctured into the interior of the designated vertebra to add filling materials such as bone cement into the designated vertebra through the working sleeve. It can be seen that the injection of anesthetics and the puncture of the designated vertebra can be completed in one puncture, so there is no need to perform two perspectives during the clinical operation to ensure the accuracy of the anesthetic injection position and the puncture position, thereby reducing the time for the operation, and avoiding the situation where the radiation generated by multiple perspectives will bring greater risks to doctors and patients. In addition, the side of the puncture assembly at one end of the working sleeve of the puncture tool provided by the utility model is provided with holes, which can make the injected filling material more evenly distributed inside the designated vertebra, greatly improving the effect of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1A A schematic diagram of an existing method for injecting anesthetic provided by the utility model;

[0023] Figure 1B A schematic diagram of an existing puncture provided by the utility model;

[0024] Figure 2 A schematic diagram of a puncture tool provided by the utility model;

[0025] Figure 3 A schematic diagram of a puncture tool provided by the utility model;

[0026] Figure 4 A schematic diagram of a puncture tool provided by the utility model;

[0027] Figure 5 A schematic diagram of a puncture tool provided by the utility model;

[0028] Fig. 6A A schematic diagram of an injection needle tube provided by the utility model;

[0029] Figure 6B A schematic diagram of a cross section of a puncture tool provided by the utility model;

[0030] Figure 7A schematic diagram of an injection needle tube provided by the utility model;

[0031] Figure 8 A schematic diagram of a puncture tool provided by the utility model;

[0032] Fig. 9A A schematic diagram of a puncture provided by the utility model;

[0033] Fig. 9B A schematic diagram of a puncture provided by the utility model;

[0034] Fig. 9C A schematic diagram of a puncture provided by the utility model;

[0035] in, Figure 2 201 refers to an injection needle tube, 202 refers to a working sleeve, 203 refers to a puncture assembly, and 204 refers to a needle tip structure of the injection needle tube 201;

[0036] Figure 3 301 refers to an injection needle, 302 refers to a working sleeve, 303 refers to a puncture assembly, and 304 refers to a tip of the puncture assembly 303;

[0037] Figure 4 401 refers to an injection needle tube, 402 refers to a working sleeve, 403 refers to a puncture assembly, 404 refers to a tip of the puncture assembly 403, and 405 refers to a needle tip structure of the injection needle tube 401;

[0038] Figure 5 501 refers to an injection needle, 502 refers to a working sleeve, 503 refers to a puncture assembly, and 504 refers to a handle;

[0039] Fig. 6A 601 refers to an injection needle tube, and 603 refers to an external thread on the outer tube wall of the injection needle tube 601;

[0040] Figure 6B 602 in the figure refers to the working sleeve, and 604 refers to the inner wall of the working sleeve 602 and Fig. 6A The external thread 603 in the embodiment matches the internal thread;

[0041] Figure 7 701 refers to the injection needle tube, 704 refers to the nut shape, and 705 refers to the tail cap;

[0042] Figure 8 802 refers to the working sleeve, 803 refers to the puncture assembly, and 804 refers to the external thread. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0044] In the prior art, vertebroplasty tools consist of a needle core and a sleeve sleeved outside the needle core, wherein the needle core is used to puncture a designated vertebra (such as a lesion in the spine), and the sleeve sleeved outside the needle core is used to provide a filling channel to facilitate the subsequent injection of filling materials such as bone cement.

[0045] Currently, when performing vertebroplasty, an anesthetic is first injected into the skin tissue near the designated vertebra (such as the lesion site of the spine) using a syringe. The specific method can be referred to as follows Figure 1A .

[0046] Figure 1A The present invention provides a schematic diagram of an existing method for injecting anesthetic.

[0047] Depend on Figure 1A It can be seen that in the prior art, it is necessary to first use a syringe to inject anesthetics into the skin tissue near a designated vertebra (such as a lesion on the spine), and during the injection process, the position of the syringe needle needs to be viewed through the X-ray machine to monitor the position of the syringe needle to avoid the syringe needle damaging important structures such as surrounding nerve roots.

[0048] Then, the needle core in the existing vertebroplasty tool is used to puncture into the designated vertebra (such as the lesion of the spine), and the specific steps can be referred to as follows: Figure 1B .

[0049] Figure 1B A schematic diagram of an existing puncture provided by the utility model.

[0050] Depend on Figure 1B It can be seen that after the injection of anesthetic, the needle core in the existing vertebroplasty tool needs to be used to puncture into the designated vertebra (such as the lesion of the spine), and during the puncture, it is necessary to re-perform fluoroscopy to determine the position of the designated vertebra so that the needle core can accurately puncture into the designated vertebra. After the pillow core is pulled out, bone cement is injected into the cannula.

[0051] It can be seen that the prior art requires multiple fluoroscopy to ensure the accuracy of the anesthetic injection position and the puncture position, which will lead to a longer operation time, and the radiation generated by multiple fluoroscopy will bring greater risks to doctors and patients. In addition, the existing split vertebroplasty tool has a single channel, which will cause the injected bone cement to flow in a single direction, resulting in uneven distribution of bone cement inside the specified vertebra, resulting in poor surgical results.

[0052] In order to solve the problems in the prior art, the utility model provides a puncture tool, which includes: an injection needle and a working sleeve, which can be specifically referred to as follows: Figure 2 .

[0053] Figure 2 A schematic diagram of a puncture tool provided by the utility model.

[0054] Depend on Figure 2 It can be seen that the puncture tool may include: an injection needle tube 201 and a working sleeve 202. The injection needle tube 201 is a hollow tubular structure, and one end of the injection needle tube 201 is a needle tip structure 204. A puncture assembly 203 is provided at the tube mouth of one end of the working sleeve 202, and holes are provided on the side wall of the puncture assembly 203 so that the filling material (such as bone cement) injected into the working sleeve 202 flows in multiple directions to prevent the filling material from being unevenly distributed inside the designated vertebral body. The working sleeve 202 is sleeved on the injection needle tube 201, and one end of the needle tip structure 204 of the injection needle tube 201 is inserted into the working sleeve 202 from the tube mouth of the end of the working sleeve 202 where the puncture assembly 203 is not provided, and passes through the tube mouth of the end where the puncture assembly 203 is provided.

[0055] In order to facilitate cutting into the designated vertebral body and injecting the filling material into the designated vertebral body, the puncture assembly provided on the working sleeve of the puncture tool in the utility model can be set to a hollow triangular pyramid shape, and holes can be provided on the three pyramid sides of the puncture assembly. For details, please refer to the following Figure 3 .

[0056] Figure 3 The present invention is a schematic diagram of a puncture tool provided by the present invention.

[0057] Depend on Figure 3It can be seen that the puncture assembly 303 provided on the working sleeve 302 of the puncture tool can be set to a hollow triangular pyramid shape so that it can accurately enter the designated vertebral body through its sharp structure. In addition, holes can be provided on the three pyramid sides of the puncture assembly 303, so that the filling material injected into the working sleeve 302 can flow in multiple directions through the holes provided on the three pyramid sides, preventing the filling material from being unevenly distributed inside the designated vertebral body. In addition, the tip 304 of the puncture assembly 303 can be set to a triangular tip with a small hole, so that the injection needle 301 can inject the anesthetic into the skin tissue near the designated vertebral body (such as the lesion of the spine) through the triangular tip 304 with a small hole.

[0058] Of course, the tip of the puncture assembly provided on the working sleeve can also be composed of two symmetrical triangular tips arranged side by side. For details, please refer to the following Figure 4 .

[0059] Figure 4 The present invention is a schematic diagram of a puncture tool provided by the present invention.

[0060] Depend on Figure 4 It can be seen that the tip of the puncture assembly 403 can be composed of two triangular tips 404 arranged side by side, and one end of the needle tip structure 405 of the injection needle tube 401 can be inserted into the working sleeve 402 from the tube opening of the end of the working sleeve 402 where the puncture assembly 403 is not provided, and inserted out from the middle of the two triangular tips 404.

[0061] In addition, in order to enable the user to hold the puncture tool more stably during use, the end of the working sleeve that is not provided with the puncture assembly may also be provided with a handle, which can be specifically referred to as follows Figure 5 .

[0062] Figure 5 The present invention is a schematic diagram of a puncture tool provided by the present invention.

[0063] Depend on Figure 5 It can be seen that the end of the working sleeve 502 not provided with the puncture assembly 503 can also be provided with a handle 504, and the handle 504 is provided with a through hole for inserting the injection needle 501 into the working sleeve 502, wherein the handle 504 can be set as a trapezoidal structure, and the upper and lower bottoms of the handle 504 of the trapezoidal structure are provided with through holes, and the injection needle 501 can pass through the through holes provided on the upper and lower bottoms of the handle of the trapezoidal structure and be inserted into the working sleeve 502. Among them, the handle 504 and the working sleeve 502 can be connected in a variety of ways (such as threaded connection), and the utility model does not limit it here.

[0064] certainly, Figure 5It is just a form of puncture tool, and the puncture tool may not be provided with a handle. For example, the end of the puncture tool without the puncture component can be directly connected to the surgical robot to perform clinical surgery through the surgical robot. There can be many specific connection methods between the puncture tool and the surgical robot, and the utility model is not limited here.

[0065] In order to enhance the stability of the connection between the injection needle and the working sleeve, an external thread may be provided on the outer tube wall of the injection needle, and an internal thread matching the external thread may be provided on the inner wall of the working sleeve. For details, please refer to the following Fig. 6A and Figure 6B .

[0066] Fig. 6A This is a schematic diagram of an injection needle tube provided by the utility model.

[0067] Figure 6B This is a schematic diagram of a cross section of a puncture tool provided by the utility model.

[0068] Depend on Fig. 6A and Figure 6B It can be seen that an external thread 603 can be provided on the outer tube wall of the injection needle tube 601, and at the same time, an internal thread 604 matching the external thread 603 can be provided on the inner wall of the working sleeve 602, so that the injection needle tube 601 and the working sleeve 602 can be tightly engaged through the matching internal thread 604 and external thread 603, thereby enhancing the stability of the connection between the injection needle tube 601 and the working sleeve 602. Among them, the external thread 603 provided on the outer tube wall of the injection needle tube 601 can be located on the outer tube wall near the tube mouth of the end of the injection needle tube 601 where the needle tip structure is not provided. Of course, the external thread 603 provided on the outer tube wall of the injection needle tube 601 can also be located in other positions, such as, on the outer tube wall in the middle of the injection needle tube 601.

[0069] In addition, the outer tube wall at the tube opening of the end of the injection needle tube that is not provided with the needle tip structure may be in a nut shape, and the details may refer to the following: Figure 7 .

[0070] Figure 7 This is a schematic diagram of an injection needle tube provided by the utility model.

[0071] Depend on Figure 7 It can be seen that the outer tube wall at the tube opening of the end of the injection needle tube 701 where the needle tip structure is not provided can be in a nut shape 704, and then when the puncture tool punctures near the designated vertebra, the injection needle tube 701 can be withdrawn a certain distance in the working sleeve by twisting the nut shape 704, so as to perform subsequent puncture operations through the working sleeve.

[0072] In addition, the top of the tube mouth of the injection needle tube 701 at the end where the needle tip structure is not provided can also be connected to the tail cap 705 with a hollow structure (such as: connected to the top of the tube mouth of the injection needle tube 701 at the end where the needle tip structure is not provided by a direct docking installation method), so as to facilitate the connection of the device for injecting anesthetics (such as a syringe) through the tail cap 705.

[0073] In addition, an external thread is provided near the pipe opening of the working sleeve where the puncture assembly is provided. For details, please refer to the following Figure 8 .

[0074] Figure 8 The present invention is a schematic diagram of a puncture tool provided by the present invention.

[0075] Depend on Figure 8 It can be seen that an external thread 804 is provided near the tube opening of the working sleeve 802 where the puncture assembly 803 is provided, so that during the puncture process, the self-tapping function of the external thread 804 is utilized to speed up the time of puncturing into the designated vertebral body and improve the efficiency of the puncture.

[0076] In summary, the overall working method of the puncture tool provided by the utility model is that the puncture tool starts to puncture the skin tissue near the designated vertebral body, and performs the puncture operation under the perspective of a visual perspective device (such as an X-ray machine). For details, please refer to the following Fig. 9A , Fig. 9B as well as Fig. 9C .

[0077] Fig. 9A A schematic diagram of puncture provided by the utility model.

[0078] Fig. 9B A schematic diagram of puncture provided by the utility model.

[0079] Fig. 9C A schematic diagram of puncture provided by the utility model.

[0080] Depend on Fig. 9A It can be seen that the puncture tool can first be inserted into the skin tissue near the designated vertebra (such as the lesion site of the spine), and then, a device for injecting anesthetics (such as a syringe) can be connected to the end of the injection needle tube that is not provided with a needle tip structure, and the anesthetic can be injected into the skin tissue near the designated vertebra.

[0081] Depend on Fig. 9B It can be seen that after the injection of anesthetic is completed, the puncture operation can be continued, and when the puncture tool punctures near the designated vertebra, the injection needle tube is withdrawn a certain distance from the working sleeve by twisting the nut-shaped structure on the outer tube wall at the tube mouth of the end of the injection needle tube where the needle tip structure is not provided.

[0082] Depend on Fig. 9C It can be seen that the puncture assembly of the working sleeve can continue to puncture, open the designated vertebral body, and enter the designated vertebral body under the action of the external thread provided near the tube mouth of the puncture assembly. Then, after confirming that the puncture position of the puncture tool is correct under the perspective of a visual perspective device (such as an X-ray machine), the injection needle tube is pulled out by twisting the nut-shaped structure on the outer tube wall at the tube mouth of the end of the injection needle tube without the needle tip structure, and the filling material (such as bone cement) is injected into the working sleeve. After the filling is completed, the working sleeve is pulled out to complete the operation.

[0083] It should be noted that the puncture tool is not provided with a needle tip structure and one end of the puncture assembly can also be connected to a surgical robot, and the above steps can be completed under the guidance of the surgical robot.

[0084] It can be seen that during clinical surgery using the puncture tool of the utility model, the injection of anesthetics and the puncture of the designated vertebra can be completed in one puncture, so there is no need to perform two fluoroscopy to ensure the accuracy of the anesthetic injection position and the puncture position during clinical surgery, thereby reducing the time for surgery and avoiding the situation where the radiation generated by multiple fluoroscopy will bring greater risks to doctors and patients. In addition, the side of the puncture component at one end of the working sleeve of the puncture tool provided by the utility model is provided with a hole, which can make the injected filling material more evenly distributed inside the designated vertebra, greatly improving the effect of the surgery.

[0085] Each embodiment of the present invention is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0086] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of this application.

Claims

1. A puncture tool, characterized in that: The puncture tool comprises: an injection needle and a working sleeve; The injection needle tube is a hollow tubular structure, and one end of the injection needle tube is a needle tip structure; A puncture assembly is provided at the tube opening at one end of the working sleeve, and a hole is provided on the side wall of the puncture assembly; The working sleeve is sleeved on the injection needle tube, wherein one end of the needle tip structure of the injection needle tube is inserted into the working sleeve from the tube opening at the end of the working sleeve where the puncture assembly is not provided, and passes through the tube opening at the end where the puncture assembly is provided.

2. The puncture tool according to claim 1, characterized in that: The outer tube wall at the tube opening of one end of the injection needle tube not provided with the needle tip structure is in a nut shape.

3. The puncture tool according to claim 1, characterized in that: The puncture assembly of the working sleeve is in the shape of a hollow triangular pyramid.

4. The puncture tool according to claim 3, characterized in that: The three pyramid sides of the puncture component are all provided with holes.

5. The puncture tool according to claim 1, characterized in that: The pointed tip of the puncture assembly consists of two symmetrical triangular pointed tips arranged side by side.

6. The puncture tool according to claim 1, characterized in that: The end of the working sleeve that is not provided with the puncture assembly is provided with a handle, and the handle is provided with a through hole for inserting the injection needle tube into the working sleeve.

7. The piercing tool according to claim 6, characterized in that: The handle is a trapezoidal structure, and the through holes are arranged on the upper and lower bottoms of the handle of the trapezoidal structure.

8. The puncture tool according to claim 1, characterized in that: The outer tube wall of the injection needle tube is provided with an external thread, and the inner wall of the working sleeve is provided with an internal thread matching the external thread.

9. The puncture tool according to claim 8, characterized in that: The external thread is arranged on the outer tube wall near the tube opening of one end of the injection needle tube where the needle tip structure is not arranged.

10. The puncture tool according to claim 1, characterized in that: An external thread is arranged near the pipe opening of the working sleeve where the puncture assembly is arranged.

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