Detachable spine marrow mud implanter

Abstract

The utility model discloses a detachable spine bone marrow mud implanter which comprises a pipe fitting, the two ends of the pipe fitting are open, the pipe fitting comprises a connecting end arranged at one end of the pipe fitting, and the connecting end is used for being connected with an implant so as to assist the implant to be implanted into sclerotin; the rod piece is arranged in the pipe piece, the two ends of the rod piece extend out of the openings in the two ends of the pipe piece, and the rod piece is used for guiding an implant. The pedicle screw is used in cooperation with a pedicle screw, the pedicle screw can be directly implanted into bone cement through the Luer interface after the pedicle screw is implanted into the pedicle screw through a guide needle penetrating through an inner hole, multiple times of tool replacement in the operation process are reduced, the operation time is effectively prolonged, and the pedicle screw is detachable and convenient to clean and disinfect; the inner hole is a stepped inner hole, so that inner hole machining is facilitated, cost is saved, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a detachable spinal bone marrow mud implanter. Background Art

[0002] Bone marrow mud, also known as bone cement, consists of two parts: white powder and colorless liquid with pungent odor. When used, as long as they are poured together in a certain proportion, a polymerization reaction will occur at room temperature. It starts like mortar, then like porridge, and then becomes like dough. It can be kneaded and squeezed into any shape, and finally gradually solidifies. The whole process takes only a dozen minutes. Before it hardens, the doctor places it on the part where the joint is to be replaced, and then installs the artificial joint. When the reaction is over, the local temperature rises slightly. It feels a little hot to the touch. At this time, the bone cement, which is as strong as high-quality construction cement, successfully inlays the artificial joint with the human skeleton and firmly fixes it. After a short period of rehabilitation after the operation, the replaced joint can function. If it is an artificial hip replacement, you can walk on the ground at this time. This fixation is quite reliable and can be maintained for more than ten years, or even more than twenty years. After the bone cement is fixed, it can effectively play a supporting role and is conducive to bone stability.

[0003] An implanter is required when injecting bone cement. Conventional implanters are non-detachable, which makes them difficult to clean and easily leaves residues between the inner hole and the mating parts. Utility Model Content

[0004] The utility model aims to provide a detachable spinal bone marrow mud implanter to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a detachable spinal bone marrow mud implanter, comprising a pipe, both ends of which are open, and the pipe includes a connecting end arranged at one end thereof, and the connecting end is used to connect an implant to assist the implant to be placed into the bone;

[0006] And a rod, which is placed in the tube and has two ends extending outside the openings at two ends of the tube for guiding the implant.

[0007] Furthermore, the rod comprises an inner hole, which extends along the axial direction of the rod and extends to be connected with both end portions of the rod, and bone cement can be injected through the inner hole.

[0008] Furthermore, the inner hole includes a first hole segment and a second hole segment, one end of the first hole segment extends to one end of the rod, one end of the second hole segment extends to the other end of the rod, and an inner step is formed at the connection between the first hole segment and the second hole segment.

[0009] Furthermore, the rod member includes a first rod segment and a second rod segment, an end of the first rod segment is connected to an end of the second rod segment, and an outer wall diameter of the first rod segment is greater than an outer wall diameter of the second rod segment.

[0010] Furthermore, the first rod segment includes a Luer interface, and the Luer interface is arranged on an end of the first rod segment away from the second rod segment.

[0011] Furthermore, the second rod segment includes a joint, and the joint is a polygonal cylindrical surface arranged on an outer wall of one end of the second rod segment, and the polygonal cylindrical surface is arranged on an end of the second rod segment away from the first rod segment.

[0012] Furthermore, the polygonal cylindrical surface is used to prevent the rod itself from rotating in the circumferential direction.

[0013] Furthermore, the connecting end is an external thread arranged on the end of the pipe fitting, and the pipe fitting includes a stopper, which is arranged on the outer wall of the pipe fitting and located above the external thread.

[0014] Furthermore, the pipe fitting includes a first pipe and a second pipe, and an outer step is formed at a connection between the first pipe and the second pipe.

[0015] Furthermore, the stopper is the outer step, and the outer wall diameter of the first pipe is greater than the outer wall diameter of the second pipe.

[0016] Furthermore, a plurality of holes are provided on the side wall of the first pipe, the first pipe includes a handle, the handle is provided on the outer wall of the first pipe, the outer wall of the handle is provided with a protrusion for increasing friction, and the external thread is provided on the outer wall of the second pipe.

[0017] The beneficial effects achieved by the utility model are:

[0018] 1. The utility model product is used in conjunction with pedicle screws. After the pedicle screws are implanted through the inner hole, the bone cement can be directly implanted through the Luer interface, reducing the multiple tool changes during the operation and effectively improving the operation time. In addition, the product is detachable and easy to clean and disinfect; the inner hole is a stepped inner hole, which is easy to process the inner hole, saves costs and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the rod member of the utility model;

[0021] Figure 3 It is a schematic diagram of the pipe fitting of the utility model;

[0022] Figure 4 It is a front cross-sectional view of the utility model as a whole;

[0023] In the figure: 1, pipe fitting; 11, first pipeline; 12, second pipeline;

[0024] 2. Connection end;

[0025] 3. Rod; 31. First rod section; 32. Second rod section;

[0026] 4. Inner hole; 5. Luer interface; 6. Connector; 7. Stop; 8. Hole; 9. Handle. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings.

[0028] See also Figure 1-Figure 4 The utility model provides a technical solution: a detachable spinal bone marrow mud implanter, including a pipe 1, the two ends of the pipe 1 are open, the pipe 1 includes a connecting end 2 arranged at one end thereof, the connecting end 2 is used to connect the implant to assist the implant to be placed in the bone; and a rod 3, the rod 3 is inserted into the pipe 1, and its two ends extend outside the two end openings of the pipe 1 to guide the implant; the rod 3 includes an inner hole 4, the inner hole 4 extends along the axial direction of the rod 3, and extends to connect with the two end portions of the rod 3, and bone cement can be injected through the inner hole 4.

[0029] If bone marrow mud needs to be implanted, the implant, i.e., the pedicle implanter, can be connected to the pipe through the connecting end, and one end of the rod is connected to a syringe for injecting bone marrow mud through a Luer interface to achieve the purpose of injecting bone marrow mud.

[0030] You can choose to insert the pedicle screw with or without a guide wire, or you can choose to use both of the two injectors at the same time;

[0031] And the implant pedicle screws used with this product can be selected from a variety of specifications;

[0032] When used with solid pedicle screws, the inner hole 4 of this product does not work;

[0033] When used with a hollow pedicle screw, a guide needle can be passed through the inner hole 4 of the product to make the pedicle screw implantation more accurate.

[0034] The inner hole 4 includes a first hole section and a second hole section. One end of the first hole section extends to one end of the rod 3, and one end of the second hole section extends to the other end of the rod 3. An inner step is formed at the connection between the first hole section and the second hole section.

[0035] The inner hole 4 is in a stepped shape, which can reduce the difficulty of processing the inner hole 4 and improve production efficiency compared with conventional through holes.

[0036] The rod 3 includes a first rod segment 31 and a second rod segment 32 . The end of the first rod segment 31 is connected to the end of the second rod segment 32 . The outer wall diameter of the first rod segment 31 is greater than the outer wall diameter of the second rod segment 32 .

[0037] Since the diameters of the first rod segment and the second rod segment are different, a step-like shape is formed at the connection point, which is to facilitate the insertion of the rod 3 into the pipe 1 and to match the size of the implant.

[0038] The first rod segment 31 includes a Luer interface 5 , and the Luer interface 5 is disposed on an end of the first rod segment 31 away from the second rod segment 32 .

[0039] After the pedicle screw is implanted and the guide pin is pulled out, bone cement can be injected into the syringe through the inner hole of the Luer interface 5 or the outer thread of the Luer interface 5.

[0040] The second rod segment 32 includes a joint 6 , which is a polygonal cylindrical surface disposed on an outer wall of one end of the second rod segment 32 . The polygonal cylindrical surface is disposed on an end of the second rod segment 32 away from the first rod segment 31 .

[0041] The polygonal cylindrical surface of the outer wall of the rod 3 is used to stop rotation, that is, to prevent the rod 3 from rotating in the circumferential direction when guiding the implant.

[0042] The connecting end 2 is an external thread arranged at the end of the pipe fitting 1. The pipe fitting 1 includes a stopper 7, which is arranged on the outer wall of the pipe fitting 1 and located above the external thread. At this time, the first pipe 11 is located above the second pipe 12, and the external thread is located on the outer wall of the second pipe. Therefore, the stopper is located on the outer wall of the connection between the second pipe and the first pipe.

[0043] The pipe fitting 1 comprises a first pipe 11 and a second pipe 12 , and an outer step is formed at the connection between the first pipe 11 and the second pipe 12 .

[0044] The stopper 7 is an outer step, and the outer wall diameter of the first pipe 11 is greater than the outer wall diameter of the second pipe 12 .

[0045] The function of the stopper 7 is to prevent the spiral action between the implant and the pipe 1 from being too tight, which would make it difficult to separate the implant from the pipe 1 after implantation.

[0046] A plurality of holes 8 are provided on the side wall of the first pipe 11 . The first pipe 11 includes a handle 9 . The handle 9 is provided on the outer wall of the first pipe 11 . A protrusion for increasing friction is provided on the outer wall of the handle 9 . An external thread is provided on the outer wall of the second pipe 12 .

[0047] The handle 9 is used to facilitate the rotation of the pipe when installing the implant. The protrusion on the outer wall of the handle 9 can increase the friction between the hand and the handle 9, thereby reducing the possibility of slipping.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A detachable spinal bone marrow mud implanter, characterized in that: include A pipe (1), both ends of the pipe (1) are open, the pipe (1) comprises a connecting end (2) arranged at one end thereof, the connecting end (2) is used to connect an implant to assist the implant to be placed into the bone; And a rod (3), wherein the rod (3) is placed in the tube (1), and its two ends extend outside the two end openings of the tube (1) for guiding the implant.

2. The detachable spinal bone marrow mud implanter according to claim 1, characterized in that: The rod (3) comprises an inner hole (4), wherein the inner hole (4) extends along the axial direction of the rod (3) and extends to be connected with the two end portions of the rod (3), and bone cement can be injected through the inner hole (4).

3. The detachable spinal bone marrow mud implant according to claim 2, characterized in that: The inner hole (4) comprises a first hole section and a second hole section, one end of the first hole section extends to one end of the rod (3), and one end of the second hole section extends to the other end of the rod (3), and an inner step is formed at the connection between the first hole section and the second hole section.

4. The detachable spinal bone marrow mud implant according to any one of claims 1 to 3, characterized in that: The rod member (3) comprises a first rod segment (31) and a second rod segment (32), the end of the first rod segment (31) and the end of the second rod segment (32) being connected together, and the outer wall diameter of the first rod segment (31) is larger than the outer wall diameter of the second rod segment (32).

5. The detachable spinal bone marrow mud implanter according to claim 4, characterized in that: The first rod segment (31) comprises a Luer interface (5), and the Luer interface (5) is arranged on an end of the first rod segment (31) away from the second rod segment (32).

6. The detachable spinal bone marrow mud implanter according to claim 4, characterized in that: The second rod segment (32) comprises a joint (6), wherein the joint (6) is a polygonal prism surface arranged on an outer wall at one end of the second rod segment (32), and the polygonal prism surface is arranged on an end of the second rod segment (32) away from the first rod segment (31).

7. The detachable spinal bone marrow mud implant according to any one of claims 1 to 3, characterized in that: The connecting end (2) is an external thread arranged at the end of the pipe fitting (1); the pipe fitting (1) comprises a stopper (7); the stopper (7) is arranged on the outer wall of the pipe fitting (1) and is located above the external thread.

8. The detachable spinal bone marrow mud implanter according to claim 7, characterized in that: The pipe fitting (1) comprises a first pipe (11) and a second pipe (12), wherein an outer step is formed at a connection point between the first pipe (11) and the second pipe (12).

9. The detachable spinal bone marrow mud implanter according to claim 8, characterized in that: The stopper (7) is the outer step, and the outer wall diameter of the first pipe (11) is greater than the outer wall diameter of the second pipe (12).

10. The detachable spinal bone marrow mud implanter according to claim 8, characterized in that: A plurality of holes (8) are provided on the side wall of the first pipe (11). The first pipe (11) comprises a handle (9). The handle (9) is arranged on the outer wall of the first pipe (11). The outer wall of the handle (9) is provided with a protrusion for increasing friction. The external thread is arranged on the outer wall of the second pipe (12).

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