Vertebroplasty tool system

Abstract

The application relates to the field of vertebral puncture instruments, and discloses a vertebral body shaping tool system which comprises a puncture needle, a needle core, a guide needle, a push rod and a reamer, the puncture needle comprises a needle rod and a double-ball type handle I, the needle rod is of a hollow structure, and the double-ball type handle I is fixedly installed at the top end of the needle rod. The application has the following advantages and effects: the bone cement hardness can be conveniently and accurately detected, the in-vivo bone cement hardening condition can be accurately judged, unilateral adjacent multiple vertebral bodies can be synchronously punctured and injected with bone cement, the operation time is shortened, the operation complications are reduced, the C-arm perspective and the radiation exposure are reduced, the application has the advantages of higher efficiency and higher safety, the double-ball type handle is arranged, the doctor can hold and operate in accordance with ergonomics, the holding force of the doctor is reduced during operation, the operation mechanical torque is increased, the operation is more labor-saving, the holding is more convenient, the unilateral multiple vertebral bodies can be simultaneously punctured, the puncture accuracy and the one-time success probability are increased, and the operation time is further shortened.

Description

Technical Field

[0001] This application relates to the field of vertebral puncture instruments, and in particular to a vertebral body shaping tool system. Background Technology

[0002] Vertebral puncture is an interventional technique of great significance in the medical field, opening up new avenues for the diagnosis and treatment of various spinal-related diseases. By precisely puncturing the vertebral body, doctors can obtain crucial tissue samples for pathological diagnosis and implement targeted treatment measures, effectively improving the patient's condition. With the continuous development of imaging technology and vertebral puncture tools, the safety, accuracy, and effectiveness of vertebral puncture have been significantly improved, playing an increasingly important role in clinical practice.

[0003] In related technologies, vertebral puncture tools typically include components such as a puncture needle, a core, a guide needle, a plunger, and a reamer. Traditional vertebral puncture tools mostly employ a T-shaped handle design. When performing surgeries for multiple adjacent vertebral fractures, multiple punctures are often performed simultaneously, either on both sides or by operating on one vertebra at a time. This is because the T-shaped handle can cause collisions and interference during operation, hindering simultaneous puncture of multiple adjacent vertebrae on the same side. This increases surgical time, the number of intraoperative C-arm fluoroscopy sessions, and radiation exposure for both patients and medical staff. Furthermore, the tools are inconvenient to hold and operate, and it is difficult to determine the hardening time of bone cement within the body, further increasing the patient's surgical time and the risk of complications.

[0004] Therefore, we propose a cone-shaped tool system to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a vertebral body shaping tool system that facilitates operation and detection of bone cement hardness, more accurately assesses the hardening status of bone cement in the body, shortens operation time, reduces surgical complications, and reduces C-arm fluoroscopy and radiation exposure. It is more efficient and safer, and the double ball handle design makes it ergonomic for doctors to hold and operate, reducing gripping force and increasing the mechanical torque of operation, making operation more effortless and easier to hold. It can perform simultaneous puncture and injection of bone cement into multiple adjacent vertebrae on one side, while increasing puncture accuracy and the success rate of one attempt, further shortening the operation time.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a vertebral body shaping tool system, including a puncture needle, a needle core, a guide needle, a push rod, and a reamer. The puncture needle includes a needle shaft and a double-ball handle one. The needle shaft has a hollow structure. The double-ball handle one is fixedly installed at the top of the needle shaft. The bottom end of the needle core passes through the double-ball handle one and extends into the needle shaft. The push rod includes a sleeve and a double-ball handle two. The sleeve has a hollow structure. The double-ball handle two is fixedly installed at the top of the sleeve. The bottom end of the reamer passes through the double-ball handle two and extends into the sleeve.

[0007] A further feature of this application is that the double-ball handle has a first clearance hole, and the needle core passes through the second clearance hole.

[0008] A further feature of this application is that a second clearance hole is provided on the double ball handle, and the reamer passes through the second clearance hole.

[0009] A further configuration of this application is: the reamer includes a guide rod and a double ball handle three, the double ball handle three being fixedly installed at the top of the guide rod, and the bottom end of the guide rod passing through the clearance hole two and extending into the rod sleeve.

[0010] A further feature of this application is that a swivel tooth is fixedly installed on the guide rod, and the swivel tooth is integrally formed with the guide rod.

[0011] A further provision of this application is that the inner diameter of the needle bar is smaller than the inner diameter of the bar sleeve, and the diameter of the guide needle is smaller than the inner diameter of the needle bar.

[0012] A further provision of this application is that the double-ball handle one, double-ball handle two, and double-ball handle three have the same shape, the double-ball handle one and double-ball handle two have the same volume, and the volume of double-ball handle three is smaller than the volume of double-ball handle two.

[0013] A further feature of this application is that the first, second, and third double-ball handles each include a handle base, a large ball, and a small ball, with the large ball and small ball fixedly mounted on the handle base, and the handle base, large ball, and small ball being integrally formed.

[0014] This application includes at least one of the following beneficial technical effects:

[0015] 1. This application utilizes the combined use of a puncture needle, needle core, guide needle, push rod, and reamer. The hollow design of the needle shaft and rod sleeve facilitates the insertion of the guide needle. During the puncture process, the bone on the anterior, posterior, medial, and lateral walls can be probed, making it safer. After the injection of bone cement, it is easier to operate and probe the degree of hardening of the bone cement, allowing for a more accurate assessment of the hardening status of the bone cement in the body. This shortens the waiting time after bone cement injection, which is of great significance for shortening the overall operation time and reducing surgical complications.

[0016] 2. This application, through the design of double-ball handle 1, double-ball handle 2, and double-ball handle 3, allows doctors to quickly adapt when switching tools at different stages of the operation, ensuring the continuity of the operation. The ergonomic design of the handles reduces the force required to grip and increases the mechanical torque, making the operation more effortless and convenient. Furthermore, it allows for simultaneous puncture and injection of bone cement into multiple adjacent vertebrae on one side, shortening the operation time and reducing C-arm fluoroscopy and radiation exposure. It has the advantages of being more efficient and safer, while also increasing puncture accuracy and the success rate on the first attempt, and shortening the operation time. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0018] Figure 2 It is a front view sectional three-dimensional structural diagram of the puncture needle and needle core.

[0019] Figure 3 This is a three-dimensional structural diagram of the needle core.

[0020] Figure 4 This is a front view sectional three-dimensional structural diagram of the push rod and the reamer.

[0021] Figure 5 This is a three-dimensional structural diagram of a reamer.

[0022] In the diagram, 1 is the puncture needle; 11 is the needle shaft; 12 is the double-ball handle one; 121 is the clearance hole one; 2 is the needle core; 3 is the guide needle; 4 is the push rod; 41 is the rod sleeve; 42 is the double-ball handle two; 421 is the clearance hole two; 5 is the reamer; 51 is the guide rod; and 52 is the double-ball handle three. Detailed Implementation

[0023] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] See Figures 1-5This application provides a vertebral body shaping tool system, including a puncture needle 1, a needle core 2, a guide needle 3, a push rod 4, and a reamer 5. The puncture needle 1 includes a needle bar 11 and a double ball handle 12. The needle bar 11 has a hollow structure. The double ball handle 12 is fixedly installed at the top of the needle bar 11. The bottom end of the needle core 2 passes through the double ball handle 12 and extends into the needle bar 11. The push rod 4 includes a sleeve 41 and a double ball handle 42. The sleeve 41 has a hollow structure. The double ball handle 42 is fixedly installed at the top of the sleeve 41. The bottom end of the reamer 5 passes through the double ball handle 42 and extends into the sleeve 41.

[0025] In this embodiment, a clearance hole 121 is provided on the double ball handle 12, through which the needle core 2 passes to facilitate insertion of the needle core 2 into the puncture needle 1. A clearance hole 421 is provided on the double ball handle 42, through which the reamer 5 passes to facilitate insertion of the reamer 5 into the push rod 4.

[0026] In this embodiment, the reamer 5 includes a guide rod 51 and a double ball handle 52. The double ball handle 52 is fixedly installed on the top of the guide rod 51, and the bottom of the guide rod 51 passes through the clearance hole 421 and extends into the rod sleeve 41.

[0027] In this embodiment, a reamer is fixedly installed on the guide rod 51. The reamer is integrally formed with the guide rod 51. The design of the reamer makes it convenient for doctors to use the reamer 5 to drill holes in the vertebrae so as to facilitate the subsequent injection of bone cement.

[0028] In this embodiment, the inner diameter of the needle bar 11 is smaller than the inner diameter of the sleeve 41, and the diameter of the guide needle 3 is smaller than the inner diameter of the needle bar 11. This ensures that each component can operate independently and can also work closely together when used in combination, thus ensuring the normal operation of the entire tool system.

[0029] In this embodiment, the double-ball handle 12, double-ball handle 2 42, and double-ball handle 3 52 have the same shape. The double-ball handle 12 and double-ball handle 2 42 have the same volume, while the double-ball handle 3 52 has a smaller volume than the double-ball handle 2 42. Each of the double-ball handle 12, double-ball handle 2 42, and double-ball handle 3 52 includes a handle base, a large ball portion, and a small ball portion. The large ball portion and the small ball portion are fixedly mounted on the handle base. When the surgeon holds the double-ball handle 12, double-ball handle 242, or double-ball handle 352, the larger ball rests against the palm of the hand, while the smaller ball is pinched between two fingers. This grip design is ergonomic, which helps the surgeon reduce gripping force and increase the mechanical torque during operation, making the operation more effortless and easier to hold. It allows for simultaneous puncture and injection of bone cement into multiple adjacent vertebrae on one side, while increasing puncture accuracy and the success rate of a single attempt, and shortening the operation time.

[0030] In this embodiment, it should be noted that the needle bar 11, needle core 2, guide needle 3, bar sleeve 41 and guide rod 51 are all made of stainless steel or titanium alloy, and the double ball handle one 12, double ball handle two 42 and double ball handle three 52 are all made of plastic.

[0031] Based on the above structure, the working principle of the vertebral body shaping tool system provided in this application is as follows:

[0032] Preparation stage: Have the patient lie prone. After confirming the area of ​​the vertebra that needs to be treated under C-arm fluoroscopy, clean and disinfect the skin of the confirmed area and administer local anesthesia. Then, make a small incision at the needle insertion site on the skin.

[0033] Puncture localization stage: The doctor holds the puncture needle 1 with a double ball handle 12 and, utilizing the hollow structure of its needle shaft 11, inserts the needle core 2 from the top of the double ball handle 12 and through it until it extends into the needle shaft 11. Then, by holding the double ball handle 12, the doctor can stably and comfortably operate the puncture needle 1 from the incision to accurately puncture the target vertebral body position, so that the tip of the needle shaft 11 reaches about 1 cm beyond the posterior edge of the vertebral body, thus completing the puncture. After the puncture is completed, the needle core 2 is removed, and then a guide needle 3 with a diameter smaller than the inner diameter of the needle shaft 11 is inserted into the appropriate position through the hollow channel of the needle shaft 11. Then the puncture needle 1 is removed, thus determining the path for subsequent operations and completing the precise localization.

[0034] Channel widening stage: The sleeve 41 of the push rod 4 is placed over the outside of the guide needle 3. The top of the sleeve 41 is fixed with a double ball handle 42. The doctor holds the double ball handle 42 and pushes the sleeve 41 forward along the guide needle 3. Under the guidance of the guide needle 3, the sleeve 41 is pushed to the predetermined position (so that the front edge of the sleeve 41 reaches about 1 cm beyond the posterior edge of the vertebral body). Then the guide needle 3 is pulled out to establish a preliminary channel for the subsequent operation of the reamer 5.

[0035] Cutting and Grinding Stage: Hold the double ball handle 3 52 of the reamer 5, and insert the bottom end of the guide rod 51 of the reamer 5 through the clearance hole 421 on the double ball handle 2 42, extending it into the sleeve 41. The guide rod 51 is fixedly installed with an integrally formed retractor. The doctor drives the guide rod 51 to rotate by holding the double ball handle 3 52, and uses the retractor to cut and drill the target vertebral body, expanding and reshaping the internal space and opening a passage. After drilling and opening the passage in the target vertebral body, the reamer 5 is pulled out. Then, a special bone cement filling needle can be used to fill the vertebral body cavity with the corresponding amount of bone cement through the inside of the sleeve 41. After the bone cement solidifies, the sleeve 41 is pulled out. Finally, the skin incision is closed with skin tape, and the operation is completed.

[0036] During the solidification process of filling the vertebral cavity with bone cement (while the sleeve 41 has not yet been removed), the hardness of the bone cement can be detected using a guide needle, allowing for a more accurate assessment of the hardening status of the bone cement within the body. This helps to reduce the duration of the operation and minimize surgical complications.

[0037] Throughout the entire procedure, the dual-ball handle 12, dual-ball handle 2 42, and dual-ball handle 3 52 allow doctors to quickly adapt when switching tools at different stages, ensuring continuity of the procedure. The ergonomic design of the handles reduces gripping force and increases mechanical torque, making the procedure easier and less strenuous. It also increases puncture accuracy and the success rate on the first attempt, shortening the operation time. Furthermore, the coordinated use of the puncture needle 1, needle core 2, guide needle 3, push rod 4, and reamer 5 allows for simultaneous unilateral puncture and injection of bone cement into multiple adjacent vertebrae, further reducing operation time, C-arm fluoroscopy, and radiation exposure, resulting in greater efficiency and safety.

[0038] The foregoing has provided a detailed description of a cone-shaped shaping tool system. Specific embodiments have been used to illustrate the principles and implementation methods of this application. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A cone-shaped shaping tool system, characterized in that, The device includes a puncture needle (1), a needle core (2), a guide needle (3), a push rod (4), and a reamer (5). The puncture needle (1) includes a needle bar (11) and a double-ball handle (12). The needle bar (11) is hollow. The double-ball handle (12) is fixedly installed at the top of the needle bar (11). The bottom end of the needle core (2) passes through the double-ball handle (12) and extends into the needle bar (11). The push rod (4) includes a sleeve (41) and a double-ball handle (42). The sleeve (41) is hollow. The double-ball handle (42) is fixedly installed at the top of the sleeve (41). The bottom end of the reamer (5) passes through the double-ball handle (42) and extends into the sleeve (41).

2. The vertebral shaping tool system according to claim 1, characterized in that: The double ball handle (12) has a clearance hole (121) and the needle core (2) passes through the clearance hole (121).

3. The vertebral body shaping tool system according to claim 1, characterized in that: The double ball handle (42) has a clearance hole (421) and the reamer (5) passes through the clearance hole (421).

4. The vertebral shaping tool system according to claim 3, characterized in that: The reamer (5) includes a guide rod (51) and a double ball handle (52). The double ball handle (52) is fixedly installed on the top of the guide rod (51). The bottom end of the guide rod (51) passes through the clearance hole (421) and extends into the sleeve (41).

5. The vertebral shaping tool system according to claim 4, characterized in that: A bevel gear is fixedly installed on the guide rod (51), and the bevel gear is integrally formed with the guide rod (51).

6. The vertebral shaping tool system according to claim 1, characterized in that: The inner diameter of the needle bar (11) is smaller than the inner diameter of the sleeve (41), and the diameter of the guide needle (3) is smaller than the inner diameter of the needle bar (11).

7. The vertebral shaping tool system according to claim 4, characterized in that: The double-ball handle one (12), double-ball handle two (42) and double-ball handle three (52) have the same shape. The double-ball handle one (12) and double-ball handle two (42) have the same volume. The volume of double-ball handle three (52) is smaller than that of double-ball handle two (42).

8. The vertebral shaping tool system according to claim 1, characterized in that: The first (12), the second (42), and the third (52) of the double ball handles each include a handle base, a large ball, and a small ball. The large ball and the small ball are fixedly installed on the handle base, and the handle base, the large ball, and the small ball are integrally formed.

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