Surgical tool

Abstract

The invention discloses a surgical tool which comprises an injection tube, an injection opening switch, a hollow tube, a middle rod and a piston, and the injection tube comprises a tail portion and a head portion. The injection port switch is connected with the injection tube, the hollow tube is arranged in the injection tube, the top end of the hollow tube extends out of the tail of the injection tube, the middle rod is arranged in the hollow tube, the tail end of the middle rod is connected with the piston, the piston is adjacent to the head of the injection tube, and the piston abuts against the hollow tube through the middle rod. Powder and liquid of the bone cement are injected into the injection tube and are mixed. And the mixed reagent flows out of the injection tube through the movement of the middle rod, the hollow tube and the piston in the injection tube. The mixing process and the injection process of the bone cement are carried out in the same surgical tool, so that the problem that the bone cement is sprayed outwards and contaminates a non-surgical area can be avoided, waste of the bone cement is reduced, and the surgical time is saved.

Description

Technical Field

[0001] The present specification relates to the field of medical technology, and in particular to a surgical tool. Background Art

[0002] With the development of medical technology, vertebroplasty is becoming more and more widely used. Vertebroplasty is a minimally invasive surgical technique used to stabilize spinal compression fractures. It usually involves injecting bone cement into the cracked or broken back bones. Bone cement can harden, stabilize the fracture site and support the spine. Bone cement refers to bone cement, which is an orthopedic medical material.

[0003] Currently, the powder and liquid of bone cement are first mixed in an open container, and then the mixed bone cement is drawn out with a syringe and injected into the vertebral body through a tubular channel.

[0004] However, in the process of mixing bone cement in an open container, bone cement is easily spilled and contaminated in non-operative areas. In addition, the mixing process and injection process of bone cement are respectively performed in different tools, which will lead to bone cement waste and increase operation time. Summary of the invention

[0005] This specification provides a surgical tool to partially solve the above-mentioned problems existing in the prior art.

[0006] This manual adopts the following technical solutions:

[0007] The present specification provides a surgical tool, which comprises: an injection tube 1, an injection port switch 2, a hollow tube 3, an intermediate rod 4 and a piston 5, wherein the injection tube 1 comprises a tail portion 101 of the injection tube and a head portion 102 of the injection tube 1; the injection port switch 2 is connected to the injection tube 1, the hollow tube 3 is disposed in the injection tube 1, the top end of the hollow tube 3 extends out of the tail portion 101 of the injection tube 1, the intermediate rod 4 is disposed in the hollow tube 3, the end of the intermediate rod 4 is connected to the piston 5, the piston 5 is adjacent to the head portion 102 of the injection tube 1, and the piston 5 abuts against the hollow tube 3 through the intermediate rod 4; wherein:

[0008] The injection tube 1 is used to load the reagent injected through the injection port switch 2 when the injection port switch 2 is in the open state;

[0009] The hollow tube 3 is used to move in the injection tube 1 toward the tail portion 101 and toward the head portion 102;

[0010] The intermediate rod 4 is used to move along the moving direction of the hollow tube 3 to drive the piston 5 to move in the injection tube 1;

[0011] The piston 5 is used to move the mixed reagent to the head 102 of the syringe 1 when it moves toward the tail 101 in the syringe 1, and to push the mixed reagent to make the mixed reagent flow out from the head 102 of the syringe 1 when it moves toward the head 102 in the syringe 1.

[0012] Optionally, the surgical tool further comprises a plurality of propeller blades 6, each propeller blade 6 is disposed between the injection tube 1 and the hollow tube 3, and a distal end of each propeller blade is connected to the hollow tube 3;

[0013] The hollow tube 3 is used to rotate inside the injection tube 1 , driving the propeller blades 6 to rotate and mix the reagent loaded in the injection tube 1 .

[0014] Optionally, the top end of the intermediate rod 4 extends out of the top end of the hollow tube 3;

[0015] The middle rod 4 is used to move in the hollow tube 3 toward the tail portion 101 , driving the hollow tube 3 and the piston 5 to move in the injection tube 1 toward the tail portion 101 , and to move in the direction of the head portion 102 , driving the piston 5 to move in the injection tube 1 toward the head portion 102 .

[0016] Optionally, the hollow tube 3 is used to move in the injection tube 1 toward the head 102 , thereby driving the piston 5 to move in the injection tube 1 toward the head 102 .

[0017] Optionally, a plurality of slots 7 are provided inside the hollow tube 3 , and a plurality of protrusions 8 are provided on the intermediate rod 4 , and each protrusion 8 is inserted into each slot 7 .

[0018] Optionally, the top end of the intermediate rod 4 extends out of the top end of the hollow tube 3;

[0019] The intermediate rod 4 is used to move in the direction of the tail portion 101 in the hollow tube 3, drive the piston 5 to move in the direction of the tail portion 101 in the injection tube 1, and drive the hollow tube 3 to move in the direction of the tail portion 101 in the injection tube 1 by snapping into the respective slots 7 through the respective protrusions 8; move in the direction of the head portion 102 in the hollow tube 3, drive the piston 5 to move in the direction of the head portion 102 in the injection tube 1, and drive the hollow tube 3 to move in the direction of the head portion 102 in the injection tube 1 by snapping into the respective slots 7 through the respective protrusions 8.

[0020] Optionally, the hollow tube 3 is used to move in the direction of the tail portion 101 in the injection tube 1, and the protrusions 8 are inserted into the slots 7 to drive the intermediate rod 4 and the piston 5 to move in the direction of the tail portion 101; and to move in the direction of the head portion 102 in the injection tube 1, and the protrusions 8 are inserted into the slots 7 to drive the intermediate rod 4 and the piston 5 to move in the direction of the head portion 102.

[0021] Optionally, the top end of the intermediate rod 4 does not extend out of the top end of the hollow tube 3;

[0022] The hollow tube 3 is used to move in the injection tube 1 toward the direction of the tail portion 101, and the protrusions 8 are inserted into the slots 7 to drive the intermediate rod 4 and the piston 5 to move in the direction of the tail portion 101; and to move in the injection tube 1 toward the direction of the head portion 102, and the protrusions 8 are inserted into the slots 7 to drive the intermediate rod 4 and the piston 5 to move in the direction of the head portion 102.

[0023] Optionally, the injection port switch 2 is rotatably connected to the injection tube 1. When the angle between the injection port switch 2 and the injection tube 1 is greater than a preset angle, the injection port switch 2 is in an open state. When the angle between the injection port switch 2 and the injection tube 1 is not greater than a preset angle, the injection port switch 2 is in a closed state.

[0024] Optionally, the head 102 of the injection tube 1 further includes an outlet 9; the outlet 9 is connected to the tubular channel 10;

[0025] The piston 5 is used to push the mixed reagent when moving in the direction of the tail portion 101 in the syringe 1, so that the mixed reagent flows from the outlet 9 of the syringe 1 to the tubular channel 10.

[0026] At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects:

[0027] The surgical tool provided in this specification includes a syringe, an injection port switch, a hollow tube, an intermediate rod and a piston, and the syringe includes a tail and a head. The injection port switch is connected to the syringe, the hollow tube is disposed in the syringe, the top of the hollow tube extends out of the tail of the syringe, the intermediate rod is disposed in the hollow tube, the end of the intermediate rod is connected to the piston, the piston is adjacent to the head of the syringe, and the piston is against the hollow tube through the intermediate rod. The reagent is injected into the syringe and mixed. The mixed reagent flows out of the syringe by moving the intermediate rod, the hollow tube and the piston in the syringe. By performing the mixing process and the injection process of the reagent in the same surgical tool, the problem of spilling the reagent and contaminating the non-surgical area can be avoided, the waste of the reagent can be reduced, and the operation time can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The illustrative embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation on this specification. In the drawings:

[0029] Figure 1 A schematic diagram of a surgical tool provided in this specification;

[0030] Figure 2 A schematic diagram of a surgical tool provided in this specification;

[0031] Figure 3 A schematic diagram of a surgical tool provided in this specification;

[0032] Figure 4 A schematic diagram of a surgical tool provided in this specification;

[0033] Figure 5 A schematic diagram of a surgical tool provided in this specification;

[0034] Figure 6 A schematic diagram of a surgical tool provided in this specification;

[0035] Figure 7 A schematic diagram of a surgical tool provided in this specification;

[0036] Figure 8 This is a schematic diagram of a top view of a surgical tool provided in this specification. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of this specification more clear, the technical solutions of this specification will be clearly and completely described below in combination with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0038] In addition, it should be noted that all actions of acquiring signals, information or data in the present invention are performed in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0039] At present, the most commonly used surgical treatment for osteoporotic vertebral compression fractures is vertebroplasty. First, under radiofluoroscopy, a tubular channel is implanted into the fractured vertebra, and then the mixed bone cement is injected into the vertebra from the tubular channel. Due to the characteristics of bone cement, the mixed bone cement will solidify in a relatively short period of time and can adhere and fix the fractured vertebra, thereby fixing the fracture and alleviating pain.

[0040] Bone cement is a common name for bone adhesive, a self-setting medical material used to fix artificial joints in orthopedic surgery. Due to the physical properties of bone cement and its appearance and shape after solidification, it is quite similar to the white cement used in construction and decoration, so it has such a popular name. Bone cement can be used to fix joint prostheses. In addition, bone cement can also be used as a tissue filling and repair material in orthopedics and dentistry. At present, most bone cements are polymethyl methacrylate (PMMA) bone cement, calcium phosphate bone cement and calcium sulfate bone cement.

[0041] During vertebroplasty, the powder and liquid of bone cement are first mixed in an open container, and then the mixed bone cement is extracted with a syringe and injected into the vertebral body through a tubular channel. However, in the process of mixing bone cement in an open container, bone cement is easily spilled and contaminated in non-surgical areas, and the cured bone cement is difficult to clean. In addition, the mixing process and injection process of the bone cement are performed in different tools, which will lead to a waste of bone cement and increase the operation time.

[0042] Based on this, the present specification provides a surgical tool, which injects the powder and liquid of bone cement into an injection tube and mixes them. Then, the mixed bone cement flows out of the injection tube through the intermediate rod, the hollow tube and the piston move in the injection tube, and is injected into the vertebral body through the tubular channel. By performing the mixing process and the injection process of bone cement in the same surgical tool, it is possible to avoid the problem of contamination of non-surgical areas caused by the spillage of bone cement, and at the same time, reduce the waste of bone cement, avoid the increase of medical expenses due to the waste of bone cement, and save surgical time.

[0043] The technical solutions provided by the embodiments of this specification are described in detail below in conjunction with the accompanying drawings.

[0044] Figure 1 A schematic diagram of a surgical tool provided in this specification, such as Figure 1 shown.

[0045] The surgical tool provided in this specification can be used for cracked or broken back bones that require the injection of bone cement. The surgical tool can be used in any existing vertebral plastic surgery scenario. The surgical tool can be manually controlled by an operator or configured on a mechanical structure such as a surgical robot for automatic control. This specification does not limit this.

[0046] The surgical tool provided in this specification includes a syringe 1, an injection port switch 2, a hollow tube 3, an intermediate rod 4 and a piston 5. The syringe 1 includes a tail 101 of the syringe 1 and a head 102 of the syringe 1. The injection port switch 2 is connected to the syringe 1. The injection port switch 2 has two states: open and closed. In this specification, Figure 1 The injection port switch 2 is shown to be in a closed state; the hollow tube 3 is disposed in the injection tube 1, the top end of the hollow tube 3 extends out of the tail 101 of the injection tube 1, and the working channel established by the injection tube 1 can accommodate relative movement between the injection tube 1 and the hollow tube 3; the middle rod 4 is disposed in the hollow tube 3, the end of the middle rod 4 is connected to the piston 5, and the working channel established by the hollow tube 3 can accommodate relative movement between the hollow tube 3 and the middle rod 4. Figure 1 The top end of the intermediate rod 4 shown extends out of the top end of the hollow tube 3. This is only used as an example for explanation. Of course, the top end of the intermediate rod 4 may not extend out of the top end of the hollow tube 3, and this specification does not make a specific limitation. The piston 5 is adjacent to the head 102 of the injection tube 1, and the piston 5 is in close contact with the injection tube 1 to form a sealing structure. The piston 5 is against the hollow tube 3 through the intermediate rod 4.

[0047] Among them, when the injection port switch 2 of the surgical tool provided in this specification is in the open state, Figure 2 As shown, Figure 2The schematic diagram of a surgical tool provided in this specification is to inject a reagent into a syringe 1. The syringe 1 is used to load the reagent injected through the injection port switch 2 when the injection port switch 2 is in the open state. The reagent is a powder and liquid of bone cement. The hollow tube 3 is used to move in the direction of the tail 101 and the head 102 in the syringe 1. The middle rod 4 is used to move along the direction of movement of the hollow tube 3 to drive the piston 5 to move in the syringe 1. When the middle rod 4 moves in the direction of the tail 101 in the hollow tube 3, as shown in FIG. Figure 3 As shown, Figure 3 Schematic diagram of a surgical tool provided in this specification, the middle rod 4 will drive the piston 5 to move in the direction of the tail 101, the piston 5 will be away from the head 102 of the syringe 1, and there is a space between the piston 5 and the head 102 of the syringe 1, so that the mixed reagent in the syringe 1 will flow into the head 102 of the syringe 1. When the middle rod 4 moves in the direction of the head 102 in the hollow tube 3, the middle rod 4 will drive the piston 5 to move in the direction of the head 102, so that the piston 5 will move from a position away from the head 102 of the syringe 1 to a position adjacent to the head 102 of the syringe 1, and then push the mixed reagent in the head 102 of the syringe 1, so that the mixed reagent flows out of the head 102 of the syringe 1. Therefore, the piston 5 can be used to move the mixed reagent to the head 102 of the syringe 1 when it moves in the direction of the tail 101 in the syringe 1, and push the mixed reagent when it moves in the direction of the head 102 in the syringe 1, so that the mixed reagent flows out of the head 102 of the syringe 1.

[0048] Thus, in the surgical scene based on the above surgical tool, the injection port switch 2 is rotatably connected to the syringe 1. When the angle between the injection port switch 2 and the syringe 1 is greater than the preset angle, the injection port switch 2 is in the open state. When the angle between the injection port switch 2 and the syringe 1 is not greater than the preset angle, the injection port switch 2 is in the closed state, and the preset angle is 0°. When the injection port switch 2 is in the open state, the operator can inject the reagent into the syringe 1 through the injection port switch 2. The reagent is a liquid and powder of bone cement. Afterwards, the liquid and powder of bone cement are mixed and stirred. Specifically, the operator can mix and stir the liquid and powder loaded in the syringe 1 by rotating the surgical tool. Afterwards, the piston 5 is moved toward the tail 101 so that the piston 5 is away from the head 102 of the syringe 1, and the mixed reagent can flow to the head 102 of the syringe 1. Afterwards, the piston 5 is moved toward the head 102 to push the mixed reagent so that the mixed reagent flows out of the head 102 of the syringe 1 for subsequent injection into the vertebral body. After the reagent is injected into the injection tube 1, when the liquid and powder of the bone cement are mixed and stirred, in order to prevent the reagent from spilling during the subsequent mixing and injection of the reagent, the injection port switch 2 can be closed.

[0049] In one or more embodiments of this specification, Figure 1 The top end of the intermediate rod 4 in the surgical tool shown extends out of the top end of the hollow tube 3. The intermediate rod 4 can move in the direction of the tail 101 in the hollow tube 3, driving the piston 5 to move in the direction of the tail 101. Since the piston 5 is against the hollow tube 3, when the piston 5 moves in the direction of the tail 101, it will apply a thrust in the direction of the tail 101 to the hollow tube 3, causing the hollow tube 3 to be subjected to the thrust in the direction of the tail 101, so that the hollow tube 3 moves in the direction of the tail 101. Of course, the intermediate rod 4 can also move in the direction of the head 102 in the hollow tube 3, driving the piston 5 to move in the direction of the head 102. Therefore, the intermediate rod 4 can be used to move in the direction of the tail 101 in the hollow tube 3, driving the hollow tube 3 and the piston 5 to move in the direction of the tail 101 in the syringe 1, and to move in the direction of the head 102, driving the piston 5 to move in the direction of the head 102 in the syringe 1.

[0050] In one or more embodiments of this specification, Figure 1 The top end of the middle rod 4 in the surgical tool shown extends out of the top end of the hollow tube 3. Since the hollow tube 3 abuts against the piston 5, the hollow tube 3 moves in the direction of the head 102 in the syringe 1, which can drive the piston 5 to move in the direction of the head 102 in the syringe 1. Specifically, the hollow tube 3 can move in the direction of the head 102 in the syringe 1. Since the hollow tube 3 abuts against the piston 5, when the hollow tube 3 moves in the direction of the head 102, it will apply a thrust in the direction of the head 102 to the piston 5, causing the piston 5 to be thrust in the direction of the head 102, so that the piston 5 moves in the direction of the head 102.

[0051] In one or more embodiments of the present specification, the surgical tool further comprises a plurality of propeller blades 6, each propeller blade 6 being disposed between the injection tube 1 and the hollow tube 3, and the end of each propeller blade being connected to the hollow tube 3, such as Figure 4 As shown, Figure 4 This is a schematic diagram of a surgical tool provided in this manual, which is only for reference. Figure 1 For example, in Figure 1 Of course, based on the instructions in this manual, Figure 4In the schematic diagram of any surgical tool other than the surgical tool, propeller blades can be added. The number of propeller blades 6 can be four, and of course it can be more than four. In the embodiment of this specification, at least four propeller blades 6 are usually installed to increase the range and strength of the propeller blades 6 mixing the powder and liquid of bone cement. In actual applications, the number of propeller blades 6 can be determined according to the specific application scenario, and this specification does not limit this. Usually, the shape, number and position of the propeller blades 6 determine the contact area between the propeller blades 6 and the powder and liquid of bone cement, and then determine the strength of the propeller blades 6 mixing the powder and liquid of bone cement. Figure 4 The propeller blade 6 shown is in the shape of a paddle and is connected to the hollow tube 3. This is for example only and does not mean that the shape of the propeller blade 6 included in the surgical tool in the embodiment of this specification is only a paddle shape, and the position of the propeller blade 6 is only the position in the example. In the embodiment of this specification, the number, shape and position of the propeller blade 6 can be set in advance according to the use scenario of the surgical tool, and this specification does not limit this. Each propeller blade 6 is deployed between the injection tube 1 and the hollow tube 3, and the end of each propeller blade is connected to the hollow tube 3. Among them, the hollow tube 3 can be used to rotate in the injection tube 1, drive each propeller blade 6 to rotate, and mix the reagent loaded in the injection tube 1, so that the liquid and powder can be better and more fully mixed.

[0052] In one or more embodiments of the present specification, a plurality of slots 7 are provided inside the hollow tube 3, and a plurality of protrusions 8 are provided on the intermediate rod 4, and each protrusion 8 is inserted into each slot 7. Figure 5 As shown, Figure 5 is a schematic diagram of a surgical tool provided in this specification, Figure 5 The top of the middle rod 4 in the middle extends out of the top of the hollow tube 3. Each slot 7 is disposed between the hollow tube 3 and the middle rod 4, and each slot 7 is connected to the hollow tube 3, that is, a plurality of slots 7 are provided inside the hollow tube 3. Each protrusion 8 is between the hollow tube 3 and the middle rod 4, and each protrusion 8 is connected to the middle rod 4, that is, a plurality of protrusions 8 are provided on the middle rod 4. Each protrusion 8 is snapped into each slot 7. The number of slots 7 can be two, and of course it can also be more than two. In the embodiment of the present specification, at least two slots 7 are usually installed to fix the middle rod 4 by snapping the protrusion 8 into the slot 7, so that the middle rod 4 remains stable. The number of protrusions 8 is the same as the number of slots 7, that is, each slot 7 corresponds to a protrusion 8, so the number of protrusions 8 can be two, and of course it can also be more than two. In the embodiment of the present specification, at least two protrusions 8 are usually installed. In actual applications, the positions and numbers of slots 7 and protrusions 8 can be determined according to specific application scenarios, and the present specification does not limit this. Figure 5 The surgical tool shown only takes two slots 7 and two protrusions 8 as an example. Figure 5The two slots 7 in the surgical tool shown are formed by two circular ring structures, the two circular ring structures are connected to the hollow tube 3, the middle rod 4 passes through the centers of the two circular ring structures, and the gap between the two circular ring structures forms the slot 7.

[0053] Based on this, when the top of the middle rod 4 in the surgical tool extends out of the top of the hollow tube 3, that is, Figure 5 In the surgical tool shown, the middle rod 4 can be used to move in the direction of the tail 101 in the hollow tube 3, drive the piston 5 to move in the direction of the tail 101 in the syringe 1, and drive the hollow tube 3 to move in the direction of the tail 101 in the syringe 1 through the protrusions 8 being inserted into the slots 7. The middle rod 4 can move in the direction of the head 102 in the hollow tube 3, drive the piston 5 to move in the direction of the head 102 in the syringe 1, and drive the hollow tube 3 to move in the direction of the head 102 in the syringe 1 through the protrusions 8 being inserted into the slots 7.

[0054] Specifically, when the intermediate rod 4 moves toward the tail 101 in the hollow tube 3, the intermediate rod 4 will drive the piston 5 connected to the intermediate rod 4 to move toward the tail 101, and the piston 5 will apply a thrust in the direction of the tail 101 to the hollow tube 3. In addition, the intermediate rod 4 will also drive the protrusion 8 connected to the intermediate rod 4 to move toward the tail 101. When the protrusion 8 moves toward the tail 101, it will apply a thrust in the direction of the tail 101 to the slot 7. Due to the thrust in the direction of the tail 101, the hollow tube 3 moves in the direction of the tail 101 in the injection tube 1. Of course, when the intermediate rod 4 moves toward the head 102 in the hollow tube 3, the intermediate rod 4 will drive the piston 5 and the protrusion 8 connected to the intermediate rod 4 to move toward the head 102. When the protrusion 8 moves toward the head 102, it will apply a thrust in the direction of the head 102 to the slot 7. The hollow tube 3 moves in the direction of the head 102 inside the syringe 1 due to the thrust in the direction of the head 102 .

[0055] In addition, based on the above Figure 5 In the surgical tool shown, the hollow tube 3 can be used to move in the syringe 1 toward the tail 101, and the protrusions 8 are inserted into the slots 7 to drive the middle rod 4 and the piston 5 to move toward the tail 101. The hollow tube 3 can move in the syringe 1 toward the head 102, and the protrusions 8 are inserted into the slots 7 to drive the middle rod 4 and the piston 5 to move toward the head 102.

[0056] Specifically, when the hollow tube 3 moves toward the tail 101 in the injection tube 1, the hollow tube 3 will drive the slot 7 connected to the hollow tube 3 to move toward the tail 101. When the slot 7 moves toward the tail 101, it will apply a thrust toward the tail 101 to the protrusion 8. Due to the thrust toward the tail 101, the protrusion 8 moves toward the tail 101, thereby driving the intermediate rod 4 connected to the protrusion 8 to move toward the tail 101, and then driving the piston 5 to move toward the tail 101. In addition, when the hollow tube 3 moves toward the head 102 in the injection tube 1, the hollow tube 3 will drive the slot 7 connected to the hollow tube 3 to move toward the head 102. When the slot 7 moves toward the head 102, it applies a thrust toward the head 102 to the protrusion 8. Due to the thrust toward the head 102, the protrusion 8 moves toward the head 102, thereby driving the intermediate rod 4 connected to the protrusion 8 to move toward the head 102, and then driving the piston 5 to move toward the head 102.

[0057] In one or more embodiments of the present specification, the top end of the intermediate rod 4 does not extend out of the top end of the hollow tube 3. Figure 6 As shown, Figure 6 is a schematic diagram of a surgical tool provided in this specification, Figure 6 The hollow tube 3 of the surgical tool shown is provided with a plurality of slots 7 inside, and a plurality of protrusions 8 are provided on the middle rod 4, and each protrusion 8 is inserted into each slot 7. Among them, the hollow tube 3 can be used to move in the direction of the tail 101 in the syringe 1, and each protrusion 8 is inserted into each slot 7, driving the middle rod 4 and the piston 5 to move in the direction of the tail 101. Move in the direction of the head 102 in the syringe 1, and each protrusion 8 is inserted into each slot 7, driving the middle rod 4 and the piston 5 to move in the direction of the head 102. The specific content is consistent with the above-mentioned process of the hollow tube 3 moving in the syringe 1, and will not be repeated here. It should be noted that since the top of the middle rod 4 does not extend out of the top of the hollow tube 3, the middle rod 4 and the piston 5 can only be moved by moving the hollow tube 3. Of course, if the top of the middle rod 4 is connected to other control structures, the movement of the middle rod 4 can also be controlled by other control structures. The other control structure may be a manual handle or a mechanical structure, and the connection method may be any existing connection method, such as a thread, and this specification does not make any specific limitation.

[0058] In one or more embodiments of the present specification, the head 102 of the injection tube 1 further includes an outlet 9, which is connected to the tubular passage 10. The outlet 9 can be locked with the end of the tubular passage 10 by means of threads or other structures, such as Figure 7 As shown, Figure 7This is a schematic diagram of a surgical tool provided in this specification. The mixed reagent can flow from the outlet 9 of the head 102 of the syringe 1 to the tubular channel 10 and be injected into the vertebral body through the tubular channel 10. Therefore, when the piston 5 moves in the syringe 1 toward the tail 101, it pushes the mixed reagent so that the mixed reagent flows from the outlet 9 of the syringe 1 to the tubular channel 10.

[0059] In an optional embodiment of the present specification, when the top end of the intermediate rod 4 extends out of the top end of the hollow tube 3, in order to control the hollow tube 3 so that the hollow tube 3 can rotate and move, and in order to control the intermediate rod 4 so that the intermediate rod 4 can move, the hollow tube 3 and the intermediate rod 4 can be connected to a control structure, and the rotation and movement of the hollow tube 3 and the movement of the intermediate rod 4 can be controlled by the control structure. The control structure can be a manual handle or a mechanical structure, which is not specifically limited in the present specification. The hollow tube 3 and the intermediate rod 4 can be connected to the control structure by a thread, a hexagon socket or the like.

[0060] In addition, when the top end of the intermediate rod 4 has not extended out of the top end of the hollow tube 3, since the intermediate rod 4 and the piston 5 can only be moved by moving the hollow tube 3, the hollow tube 3 can be connected to the control structure to control the rotation and movement of the hollow tube 3 through the control structure, thereby controlling the movement of the intermediate rod 4 and the piston 5.

[0061] In one or more embodiments of the present specification, the injection tube 1 and the hollow tube 3 in the surgical tool may be made of glass, medical grade plastic, etc., the middle rod 4 may be made of medical grade plastic, and the piston 5 may be made of rubber, which is not specifically limited in the present specification. In order to prevent the reagent from spilling from inside and outside the injection tube 1 and to ensure that the injection port switch 2 will not be accidentally opened when it is in the closed state, a buckle may be used to lock the injection port switch 2.

[0062] In one or more embodiments of this specification, Figure 8 As shown, Figure 8 This is a schematic diagram of a surgical tool provided in this specification from a top view, in which the injection tube 1, the hollow tube 3 and the middle rod 4 are cylindrical in shape, and the centers of the injection tube 1, the hollow tube 3 and the middle rod 4 are on a straight line. Figure 8 The shape of the injection port switch 2 shown is composed of a circular arc (i.e., circular arc 201) on the tail 101 of the injection tube 1, two straight lines extending through the center of the circle (i.e., first straight line 202 and second straight line 203), and a straight line connecting the two straight lines (i.e., third straight line 204). Of course, the shape of the injection port switch 2 can also be any other shape, which is not specifically limited in this specification. Figure 8 The shape of the injection port switch 2 shown is only an example.

[0063] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0064] The above description is only an embodiment of the present specification and is not intended to limit the present specification. For those skilled in the art, the present specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present specification shall be included in the scope of the claims of the present specification.

Claims

1. A surgical tool, characterized in that: The surgical tool comprises: an injection tube (1), an injection port switch (2), a hollow tube (3), an intermediate rod (4) and a piston (5); the injection tube (1) comprises a tail portion (101) of the injection tube (1) and a head portion (102) of the injection tube (1); the injection port switch (2) is connected to the injection tube (1); the hollow tube (3) is disposed in the injection tube (1); the top end of the hollow tube (3) extends out of the tail portion (101) of the injection tube (1); the intermediate rod (4) is disposed in the hollow tube (3); the end of the intermediate rod (4) is connected to the piston (5); the piston (5) is adjacent to the head portion (102) of the injection tube (1); the piston (5) abuts against the hollow tube (3) through the intermediate rod (4); wherein: The injection tube (1) is used to load the reagent injected through the injection port switch (2) when the injection port switch (2) is in an open state; The hollow tube (3) is used to move in the direction of the tail (101) and the direction of the head (102) within the injection tube (1); The intermediate rod (4) is used to move along the moving direction of the hollow tube (3) to drive the piston (5) to move in the injection tube (1); The piston (5) is used to move the mixed reagent to the head (102) of the syringe (1) when it moves in the direction of the tail (101) in the syringe (1), and to push the mixed reagent when it moves in the direction of the head (102) in the syringe (1) so that the mixed reagent flows out from the head (102) of the syringe (1).

2. The surgical tool according to claim 1, characterized in that: The surgical tool further comprises a plurality of propeller blades (6), each propeller blade (6) being disposed between the injection tube (1) and the hollow tube (3), and the end of each propeller blade being connected to the hollow tube (3); The hollow tube (3) is used to rotate inside the injection tube (1), driving the propeller blades (6) to rotate and mix the reagent loaded in the injection tube (1).

3. The surgical tool according to claim 1, characterized in that: The top end of the intermediate rod (4) extends out of the top end of the hollow tube (3); The intermediate rod (4) is used to move in the direction of the tail portion (101) inside the hollow tube (3), thereby driving the hollow tube (3) and the piston (5) to move in the direction of the tail portion (101) inside the injection tube (1), and to move in the direction of the head portion (102), thereby driving the piston (5) to move in the direction of the head portion (102) inside the injection tube (1).

4. The surgical tool according to claim 3, characterized in that: The hollow tube (3) is used to move in the injection tube (1) toward the head (102), thereby driving the piston (5) to move in the injection tube (1) toward the head (102).

5. The surgical tool according to claim 1, characterized in that: The hollow tube (3) is provided with a plurality of slots (7) inside, and the intermediate rod (4) is provided with a plurality of protrusions (8), each protrusion (8) being inserted into each slot (7).

6. The surgical tool according to claim 5, characterized in that: The top end of the intermediate rod (4) extends out of the top end of the hollow tube (3); The intermediate rod (4) is used to move in the direction of the tail portion (101) in the hollow tube (3), drive the piston (5) to move in the direction of the tail portion (101) in the injection tube (1), and drive the hollow tube (3) to move in the direction of the tail portion (101) in the injection tube (1) by snapping into the respective slots (7) through the respective protrusions (8); move in the direction of the head portion (102) in the hollow tube (3), drive the piston (5) to move in the direction of the head portion (102) in the injection tube (1), and drive the hollow tube (3) to move in the direction of the head portion (102) in the injection tube (1) by snapping into the respective slots (7) through the respective protrusions (8).

7. The surgical tool according to claim 5, characterized in that: The hollow tube (3) is used to move in the direction of the tail portion (101) inside the injection tube (1), and drive the intermediate rod (4) and the piston (5) to move in the direction of the tail portion (101) by snapping the protrusions (8) into the slots (7); and to move in the direction of the head portion (102) inside the injection tube (1), and drive the intermediate rod (4) and the piston (5) to move in the direction of the head portion (102) by snapping the protrusions (8) into the slots (7).

8. The surgical tool according to claim 5, characterized in that: The top end of the intermediate rod (4) does not extend beyond the top end of the hollow tube (3); The hollow tube (3) is used to move in the direction of the tail portion (101) inside the injection tube (1), and drive the intermediate rod (4) and the piston (5) to move in the direction of the tail portion (101) by snapping the protrusions (8) into the slots (7); and to move in the direction of the head portion (102) inside the injection tube (1), and drive the intermediate rod (4) and the piston (5) to move in the direction of the head portion (102) by snapping the protrusions (8) into the slots (7).

9. The surgical tool according to claim 1, wherein: The injection port switch (2) is rotatably connected to the injection tube (1); when the angle between the injection port switch (2) and the injection tube (1) is greater than a preset angle, the injection port switch (2) is in an open state; when the angle between the injection port switch (2) and the injection tube (1) is not greater than the preset angle, the injection port switch (2) is in a closed state.

10. The surgical tool according to claim 1, wherein: The head (102) of the injection tube (1) further comprises an outlet (9); the outlet (9) is connected to the tubular channel (10); The piston (5) is used to push the mixed reagent when moving in the direction of the tail (101) in the injection tube (1), so that the mixed reagent flows from the outlet (9) of the injection tube (1) to the tubular channel (10).

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