CN220876889U - Bone cement injector - Google Patents
Bone cement injector Download PDFInfo
- Publication number
- CN220876889U CN220876889U CN202321802834.5U CN202321802834U CN220876889U CN 220876889 U CN220876889 U CN 220876889U CN 202321802834 U CN202321802834 U CN 202321802834U CN 220876889 U CN220876889 U CN 220876889U
- Authority
- CN
- China
- Prior art keywords
- bone cement
- assembly
- groove
- piston
- pushing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002639 bone cement Substances 0.000 title claims abstract description 32
- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a bone cement injector, comprising: the top of the sleeve assembly is provided with external threads which are used for connecting the injection needle heads; the inner cavity of the sleeve assembly is provided with a pushing assembly, the top of the pushing assembly is provided with a piston assembly, and the bottom of the inner wall of the sleeve assembly is fixedly provided with a blocking block; the piston assembly comprises a piston body, a buffer groove, an I-shaped groove and a clamping groove, wherein the buffer groove is formed in the bottom of the outer wall of the piston body, the buffer groove is formed in the bottom of the piston body, the clamping groove is formed in the top of the I-shaped groove, and the pushing assembly is arranged in the inner cavities of the I-shaped groove and the clamping groove. The utility model utilizes the matched arrangement mode of the pushing component, the piston component and the blocking block, is convenient for pushing and sucking bone cement when the pushing component pushes and pulls the piston component, and enables the piston to be designed in a double-layer manner through the arrangement of the buffer groove, thereby preventing reverse leakage phenomenon, enabling the pushing of the bone cement to be smoother and improving the stability of bone cement injection.
Description
Technical Field
The utility model relates to the technical field of bone cement injection, in particular to a bone cement injector.
Background
Bone cement is a common name of bone cement, which is a medical material for bone surgery, and because of its partial physical properties and appearance and properties after solidification, which are quite similar to those of white cement for construction and decoration, the bone cement has such popular name, and its main component is polymethyl methacrylate, which is mainly used for artificial joint replacement surgery.
In the use process of bone cement, because the viscosity of the bone cement influences, the bone cement needs to be pre-filled under great pressure when being pushed and injected, the piston of the existing injector bears great pressure when being pre-filled, the simple injector is easy to cause reverse leakage of filling, and the stability of pushing and injecting the bone cement is easy to influence.
Disclosure of utility model
The present utility model is directed to a bone cement injector that solves the above-mentioned problems of the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a bone cement injector comprising:
the top of the sleeve assembly is provided with external threads which are used for connecting the injection needle heads;
the inner cavity of the sleeve assembly is provided with a pushing assembly, the top of the pushing assembly is provided with a piston assembly, and the bottom of the inner wall of the sleeve assembly is fixedly provided with a blocking block;
The piston assembly comprises a piston body, a buffer groove, an I-shaped groove and a clamping groove, wherein the buffer groove is formed in the bottom of the outer wall of the piston body, the buffer groove is formed in the bottom of the piston body, the clamping groove is formed in the top of the I-shaped groove, and the pushing assembly is arranged in the inner cavities of the I-shaped groove and the clamping groove.
Preferably, the sleeve assembly comprises a sleeve body, a connecting block and a plurality of arc-shaped strips, wherein the connecting block is fixed at the bottom end of the sleeve body, and the arc-shaped strips are fixed at two sides of the connecting block at equal intervals.
Preferably, the piston body is in fit sliding connection with the inner wall of the sleeve body, and the blocking block is fixed at the bottom of the inner wall of the sleeve body.
Preferably, the pushing assembly comprises a push rod, a plurality of anti-slip strips, a clamping block, clamping heads, I-shaped blocks and a pointed end, wherein the anti-slip strips are equidistantly fixed at the bottom of the push rod, the clamping blocks are arranged on the outer wall of the top of the push rod, the clamping heads are fixedly arranged on the outer wall of the bottom of the push rod, and the pointed end is arranged at the top end of the I-shaped blocks.
Preferably, the clamping block is in sliding connection with the inner wall of the sleeve body, and the I-shaped block is fixed at the top end of the push rod.
Preferably, the tip is fixedly connected with the inner cavity of the clamping groove in a penetrating way, and the I-shaped block is fixedly clamped with the inner cavity of the I-shaped groove.
Preferably, the push rod is slidably connected with the inner cavity of the sleeve body, and the external thread is arranged at the top of the sleeve body.
The utility model has the technical effects and advantages that:
According to the utility model, by means of the arrangement mode of the pushing component, the piston component and the blocking block, when the pushing component pushes and pulls the piston component, bone cement can be pushed and sucked conveniently, and by means of the arrangement of the buffer groove, the piston can be designed in a double-layer manner, so that reverse leakage phenomenon is prevented, the contact area between the piston and the inner wall of the needle cylinder is reduced, the pushing of the bone cement is smoother, and the stability of bone cement injection is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic diagram of the overall front cross-sectional structure of the present utility model.
Fig. 3 is an enlarged schematic view of the structure of fig. 2a according to the present utility model.
In the figure: 1. a sleeve assembly; 11. a sleeve body; 12. a connecting block; 13. an arc-shaped strip; 2. an external thread; 3. a pushing assembly; 31. a push rod; 32. an anti-slip strip; 33. a clamping block; 34. a chuck; 35. i-shaped blocks; 36. a tip; 4. a piston assembly; 41. a piston body; 42. a buffer tank; 43. an I-shaped groove; 44. a clamping groove; 5. and a blocking piece.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The present utility model provides a bone cement bolus as shown in fig. 1-3, comprising:
The top of the sleeve assembly 1 is provided with an external thread 2, and the external thread 2 is used for connecting a pushing injection needle;
The sleeve assembly 1 comprises a sleeve body 11, a connecting block 12 and a plurality of arc-shaped strips 13, wherein the connecting block 12 is fixed at the bottom end of the sleeve body 11, the two sides of the connecting block 12 are arc-shaped structures, the plurality of arc-shaped strips 13 are fixed at the two sides of the connecting block 12 at equal intervals, so that fingers can conveniently pull the connecting block 12, the pushing of a syringe is more stable, an external thread 2 is arranged at the top of the sleeve body 11, the syringe needle with the internal thread is conveniently connected externally, and bone cement can be stably pushed out for use;
The inner cavity of the sleeve assembly 1 is provided with a pushing assembly 3, the pushing assembly 3 is arranged in the inner cavities of the I-shaped groove 43 and the clamping groove 44, the pushing assembly 3 comprises a push rod 31, a plurality of anti-slip strips 32, a clamping block 33, a clamping head 34, an I-shaped block 35 and a pointed head 36, the push rod 31 is of a conventional cross structure, the anti-slip strips 32 are fixed at the bottom of the push rod 31 at equal intervals, the anti-slip strips 32 are of a protruding strip structure, friction force between hands and the bottom of the push rod 31 can be enhanced, so that the pushing stability of the push rod 31 is higher, the push rod 31 is slidably connected with the inner cavity of the sleeve body 11, the clamping block 33 is of an annular protruding structure, the periphery of the clamping block 33 is attached with the inner wall of the sleeve body 11, the clamping block 33 is arranged on the outer wall of the top of the push rod 31, and the clamping block 33 is slidably connected with the inner wall of the sleeve body 11, and the sliding stability of the push rod 31 in the inner cavity of the sleeve body 11 is convenient to be enhanced;
The clamping head 34 is fixedly arranged on the outer wall of the bottom of the push rod 31, the clamping head 34 can push the piston body 41, the limiting stability of the piston body 41 is improved, the I-shaped block 35 is of an inverted I-shaped structure, the tip 36 is arranged at the top end of the I-shaped block 35, the I-shaped block 35 is fixedly arranged at the top end of the push rod 31, the tip 36 is fixedly inserted and connected with the inner cavity of the clamping groove 44, and the push rod 31 can be conveniently and stably connected with the bottom of the piston body 41;
The top of the pushing component 3 is provided with a piston component 4, the bottom of the inner wall of the sleeve component 1 is fixedly provided with a blocking block 5, the piston component 4 comprises a piston body 41, a buffer groove 42, an I-shaped groove 43 and a clamping groove 44, the top of the piston body 41 is of a cylindrical structure, the bottom of the piston body 41 is of a structure matched with the inner wall of the sleeve body 11, the piston body 41 is in fit sliding connection with the inner wall of the sleeve body 11, the buffer groove 42 is formed in the bottom of the outer wall of the piston body 41, the buffer groove 42 is an annular groove, the buffer groove 42 is formed in the bottom of the piston body 41, the bottom of the piston body 41 can be of a double-layer structure conveniently through the buffer groove 42, the two layers of the bottom of the piston body 41 can prevent leakage of bone cement, the contact area between the piston body 41 and the inner wall of the sleeve body 11 is reduced, the thrust of the pushing injection is ensured to be suitable for normal manual thrust when the anti-leakage is promoted, the I-shaped groove 43 is of an inverted structure, the clamping groove 44 is of a sharp structure, the clamping groove 44 is formed in the bottom of the piston body 41, the I-shaped groove 43 is formed in the top of the inner cavity of the piston body 43, the I-shaped block 35 and the I-shaped groove 43 is fixedly connected with the top of the piston body 31 through the I-shaped block 35, and the top of the I-shaped groove 43 is convenient to be connected with the top of the piston body 31;
The blocking block 5 is fixed in the inner wall bottom of the sleeve body 11, the blocking block 5 is of a circular arc structure, the push rod 31 can be conveniently blocked from sliding out of the inner cavity of the sleeve body 11, the clamping block 33 of the blocking block can be matched with the top of the blocking block 5, the sliding out of the push rod 31 can be conveniently reduced, the push rod 31 is prevented from being reversely pushed out of the inner cavity of the sleeve body 11 due to overlarge bone cement pressure, the piston body 41 and the push rod 31 can be prevented from being separated from the inner cavity of the sleeve body 11, and the use stability of the bone cement injector is improved.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. A bone cement injector comprising:
The top of the sleeve assembly (1) is provided with an external thread (2), and the external thread (2) is used for connecting a pushing injection needle;
The method is characterized in that: the inner cavity of the sleeve assembly (1) is provided with a pushing assembly (3), the top of the pushing assembly (3) is provided with a piston assembly (4), and the bottom of the inner wall of the sleeve assembly (1) is fixedly provided with a blocking block (5);
The piston assembly (4) comprises a piston body (41), a buffer groove (42), an I-shaped groove (43) and a clamping groove (44), wherein the buffer groove (42) is formed in the bottom of the outer wall of the piston body (41), the buffer groove (42) is formed in the bottom of the piston body (41), the clamping groove (44) is formed in the top of the I-shaped groove (43), and the pushing assembly (3) is arranged in the inner cavities of the I-shaped groove (43) and the clamping groove (44).
2. The bone cement injector according to claim 1, wherein the sleeve assembly (1) comprises a sleeve body (11), a connecting block (12) and a plurality of arc-shaped strips (13), wherein the connecting block (12) is fixed at the bottom end of the sleeve body (11), and the arc-shaped strips (13) are equidistantly fixed at two sides of the connecting block (12).
3. Bone cement injector according to claim 2, characterized in that the piston body (41) is in a snug sliding connection with the inner wall of the sleeve body (11), the blocking block (5) being fixed to the bottom of the inner wall of the sleeve body (11).
4. The bone cement injector according to claim 2, wherein the pushing assembly (3) comprises a push rod (31), a plurality of anti-slip strips (32), a clamping block (33), a clamping head (34), an i-block (35) and a tip (36), the plurality of anti-slip strips (32) are equidistantly fixed at the bottom of the push rod (31), the clamping block (33) is arranged on the top outer wall of the push rod (31), the clamping head (34) is fixedly arranged on the bottom outer wall of the push rod (31), and the tip (36) is arranged at the top end of the i-block (35).
5. Bone cement injector according to claim 4, characterized in that the clamping block (33) is slidingly connected with the inner wall of the sleeve body (11), and the i-block (35) is fixed to the top end of the push rod (31).
6. The bone cement injector according to claim 4, characterized in that the tip (36) is fixedly connected with the inner cavity of the clamping groove (44) in a penetrating way, and the i-shaped block (35) is fixedly clamped with the inner cavity of the i-shaped groove (43).
7. The bone cement injector according to claim 4, characterized in that the push rod (31) is slidingly connected with the inner cavity of the sleeve body (11), and the external thread (2) is provided on the top of the sleeve body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321802834.5U CN220876889U (en) | 2023-07-11 | 2023-07-11 | Bone cement injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321802834.5U CN220876889U (en) | 2023-07-11 | 2023-07-11 | Bone cement injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220876889U true CN220876889U (en) | 2024-05-03 |
Family
ID=90877793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321802834.5U Active CN220876889U (en) | 2023-07-11 | 2023-07-11 | Bone cement injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220876889U (en) |
-
2023
- 2023-07-11 CN CN202321802834.5U patent/CN220876889U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |