A syringe for filling clinical bone material

Abstract

The utility model discloses a clinical bone material filling syringe, comprising a storage barrel, one end of which is connected to a needle, the other end of which is an open structure, a thrust block slidably connected inside the storage barrel, a guide rod connected to the side of the thrust block away from the needle, the movable end of the guide rod passes through the storage barrel, a thrust spring is provided inside the storage barrel to push the thrust block to slide toward the needle; a locking piece is provided inside the storage barrel for locking the guide rod. The beneficial effect is that when the syringe is used, after releasing the locking piece on the guide rod, the elasticity of the thrust spring can be used to push the thrust block to guide the bone material out of the storage barrel, the operation is simple, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the field of clinical bone materials, in particular to a syringe for filling clinical bone materials. Background Art

[0002] Bone defect is one of the most common diseases in clinical orthopedics. It can be caused by infection, trauma, tumor and congenital diseases. Most of them cannot heal by themselves and need bone transplantation. Bone transplantation materials are widely used in bone fracture repair, coating of bone implants, artificial joint repair, osteoporosis treatment (injectable bone transplantation materials), spinal treatment, tooth extraction and maxillofacial surgery. With the aging of the population and the increase of various traumas, the demand for biomedical materials, especially bone transplantation materials, continues to grow. Many natural and synthetic materials and compositions have been used in the treatment of osteoporosis.

[0003] The existing syringe has a relatively simple structure and is often used to inject gas or liquid. When injecting bone material, both hands are required to operate, which is difficult to operate and inconvenient to use. Utility Model Content

[0004] The purpose of the present utility model is to provide a clinical bone material filling syringe in order to solve the above-mentioned problems, as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a clinical bone material filling syringe, comprising a storage barrel, one end of which is connected to a needle, and the other end of which is an open structure;

[0007] A thrust block is slidably connected inside the material storage barrel, a guide rod is connected to the side of the thrust block away from the needle, a movable end of the guide rod passes through the material storage barrel, and a thrust spring is provided inside the material storage barrel to push the thrust block to slide toward the needle;

[0008] A locking piece for locking the guide rod is arranged inside the material storage barrel.

[0009] As a preferred solution, the needle and the storage barrel are integrally formed.

[0010] As a preferred solution, the connection between the storage barrel and the needle is conical, and the front end of the thrust block corresponds to the conical structure.

[0011] As a preferred solution, the guide rod is clearance-matched with an inner wall of one side of the storage barrel.

[0012] As a preferred embodiment, a plurality of locking slots are provided on the guide rod, and the locking member includes a rod-shaped structure that rotates with the inner wall of the storage barrel, and a torsion spring is provided at the rotation point to push the inner end of the locking member into the locking slot, and the outer end of the locking member passes through the storage barrel.

[0013] As a preferred solution, the locking slots are evenly distributed along the length direction of the guide rod.

[0014] As a preferred solution, the locking member is in a "Z"-shaped structure, and a middle section thereof is rotatably engaged with the inner wall of the storage barrel.

[0015] As a preferred embodiment, a mounting hole is provided on the side wall of the storage barrel, and a groove for accommodating the thrust spring is provided on the guide rod, the groove and the locking slot are far away from each other, a stopper extending into the guide rod is fixedly connected in the mounting hole, and the thrust spring is located between the thrust block and the stopper.

[0016] As a preferred solution, the outer wall of the storage barrel is connected to a finger ring, and the finger ring is arranged away from the locking member.

[0017] The beneficial effects are:

[0018] When the syringe is used, after the locking of the guide rod by the locking piece is released, the elasticity of the thrust spring can be used to enable the thrust block to guide the bone material in the storage barrel. The operation is simple, it can be used with one hand, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the second embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the internal structure of the third embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the material storage barrel in the utility model;

[0024] Figure 5 It is a structural schematic diagram of the guide rod in the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 1. Storage barrel; 101. Needle; 102. Mounting hole; 103. Stop block; 104. Finger ring; 2. Locking piece; 3. Thrust block; 4. Guide rod; 401. Locking slot; 402. Groove; 5. Thrust spring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0028] First embodiment:

[0029] See also Figure 1-Figure 5 As shown, the utility model provides a clinical bone material filling syringe, comprising a storage barrel 1, one end of the storage barrel 1 is connected to a needle 101, the other end of the storage barrel 1 is an open structure, a thrust block 3 is slidably connected inside the storage barrel 1, and the thrust block 3 is slidably sealed with the inner wall of the storage barrel 1. When the thrust block 3 slides, it can push the bone material inside the storage barrel 1, so that the bone material is led out from the opening of the needle 101;

[0030] A guide rod 4 is connected to the side of the thrust block 3 away from the needle 101, and a movable end of the guide rod 4 passes through the storage barrel 1. A thrust spring 5 is provided inside the storage barrel 1 to push the thrust block 3 to slide toward the needle 101.

[0031] A locking piece 2 for locking the guide rod 4 is provided inside the storage barrel 1. When the locking piece 2 locks the guide rod 4, the entire device is in a stationary state. After the locking piece 2 is released from locking the guide rod 4, the elasticity of the thrust spring 5 can be used to push the thrust block 3 to slide, and the thrust block 3 can push the bone material out of the storage barrel 1.

[0032] Furthermore, the needle 101 and the storage barrel 1 are integrally formed, and the connection between the storage barrel 1 and the needle 101 is tapered, and the front end of the thrust block 3 corresponds to the tapered structure, so that the bone material inside the storage barrel 1 can be pushed out more thoroughly.

[0033] The second embodiment is different from the first embodiment in that:

[0034] The guide rod 4 is in clearance with the inner wall of one side of the storage barrel 1. When the storage barrel 1 is in a cylindrical structure, the cross-section of the guide rod 4 is arched. When the storage barrel 1 is in a rectangular structure, the cross-section of the guide rod 4 is arched. A plurality of locking slots 401 are provided on the guide rod 4. The locking member 2 includes a rod-shaped structure that rotates with the inner wall of the storage barrel 1, and a torsion spring is provided at the rotation position to push the inner end of the locking member 2 to insert into the locking slot 401. The outer end of the locking member 2 passes through the storage barrel 1, and the elasticity of the torsion spring can be used to push the locking member 2 to rotate. The locking member 2 is moved so that the inner end of the locking member 2 is inserted into the locking slot 401 to lock the guide rod 4. Further, when the locking member 2 is pressed against the elasticity of the torsion spring, the locking member 2 rotates, and the inner end of the locking member 2 can pass through the locking slot 401, thereby releasing the locking fixation of the guide rod 4. At this time, the elasticity of the thrust spring 5 can be used to push the thrust block 3 to slide, so that the thrust block 3 can be moved toward the needle 101, thereby passing the bone material inside the storage barrel 1 through the inside of the needle 101.

[0035] Furthermore, the locking slots 401 are evenly distributed along the length direction of the guide rod 4, and the locking piece 2 is in a "Z"-shaped structure, wherein the middle section is rotatably matched with the inner wall of the storage barrel 1. When operating the locking piece 2, pressing the outer side of the locking piece 2 can realize the rotation of the locking piece 2, so that the inner end of the locking piece 2 is passed through the locking slot 401, which is convenient for operating the locking piece 2 to work. Furthermore, the outer wall of the storage barrel 1 is connected to a finger ring 104, and the finger ring 104 is arranged away from the locking piece 2. During operation, a finger can be inserted into the finger ring 104 to fix the storage barrel 1. When the open end of the needle 101 corresponds to the injection position, the thumb can be aligned with the outer end of the locking piece 2, thereby realizing one-handed operation of the device.

[0036] The third embodiment is different from the first embodiment in that:

[0037] A mounting hole 102 is provided on the side wall of the storage barrel 1, and the mounting hole 102 corresponds to the guide rod 4. When the guide rod 4 is installed, a groove 402 for accommodating the thrust spring 5 is provided on the guide rod 4, and the groove 402 is far away from the locking slot 401. The guide rod 4 is inserted into the locking member 2 along with the thrust block 3, and the thrust spring 5 is placed in the groove 402 on the guide rod 4. The stopper 103 is inserted into the mounting hole 102, and the thrust spring 5 is fixed by using the stopper 103 and the thrust block 3, and the stopper 103 and the storage barrel 1 are connected and fixed by hot melt connection, and the thrust spring 5 is located between the thrust block 3 and the stopper 103.

[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A clinical bone material filling syringe, comprising a storage barrel (1), one end of the storage barrel (1) is connected to a needle (101), the other end of the storage barrel (1) is an open structure, and a thrust block (3) is slidably connected inside the storage barrel (1), characterized in that: A guide rod (4) is connected to the side of the thrust block (3) away from the needle (101), and a movable end of the guide rod (4) passes through the storage barrel (1). A thrust spring (5) is provided inside the storage barrel (1) to push the thrust block (3) to slide toward the needle (101); A locking member (2) for locking the guide rod (4) is provided inside the storage barrel (1); The guide rod (4) is provided with a plurality of locking slots (401), the locking member (2) comprises a rod-shaped structure that is rotatably matched with the inner wall of the storage barrel (1), and a torsion spring is provided at the rotation position to push the inner end of the locking member (2) to be inserted into the locking slot (401), and the outer end of the locking member (2) passes through the storage barrel (1); The locking slots (401) are evenly distributed along the length direction of the guide rod (4); The locking member (2) is in a "Z"-shaped structure, with a middle section thereof rotatably engaged with the inner wall of the storage barrel (1).

2. A clinical bone material filling syringe according to claim 1, characterized in that: The needle head (101) and the material storage barrel (1) are integrally formed.

3. A clinical bone material filling syringe according to claim 2, characterized in that: The connection between the material storage barrel (1) and the needle head (101) is conical, and the front end of the thrust block (3) corresponds to the conical structure.

4. A clinical bone material filling syringe according to claim 1, characterized in that: The guide rod (4) is clearance-matched with an inner wall of one side of the storage barrel (1).

5. A clinical bone material filling syringe according to claim 1, characterized in that: The side wall of the storage barrel (1) is provided with a mounting hole (102), the guide rod (4) is provided with a groove (402) for accommodating the thrust spring (5), the groove (402) and the locking slot (401) are separated from each other, a stopper (103) extending into the guide rod (4) is fixedly connected in the mounting hole (102), and the thrust spring (5) is located between the thrust block (3) and the stopper (103).

6. A clinical bone material filling syringe according to claim 5, characterized in that: The outer wall of the storage barrel (1) is connected to a finger ring (104), and the finger ring (104) is arranged away from the locking member (2).

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