CN218106025U

CN218106025U - Bone cement capsule

Info

Publication number: CN218106025U
Application number: CN202221977770.8U
Authority: CN
Inventors: 何宇
Original assignee: Wuhan Lingyi Medical Technology Co ltd
Current assignee: Wuhan Lingyi Medical Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-23
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a bone cement capsule, including first capsule shell and second capsule shell, first capsule shell with the connection can be dismantled to the second capsule shell, works as first capsule shell with when the second capsule shell is connected, first capsule shell with the elongated of forming a solid part that is used for encapsulating bone cement between the second capsule shell holds the chamber, the diameter that the chamber was held to the elongated both ends is greater than the diameter that the chamber was held to the elongated. The utility model provides a technical scheme's beneficial effect is: the first capsule shell is pinched by hands, so that a solid-liquid mixture in the first capsule shell enters the second capsule shell from the middle part of the long containing cavity, and the second capsule shell is pinched by hands, the process is repeated for many times, when the solid-liquid mixture passes through the narrow middle part of the long containing cavity, the pressure of the narrow middle part is greater than that of the two ends, and therefore the solid-liquid mixture can be more fully mixed under the local pressurization effect of the narrow middle part, and the using effect of the bone cement can be enhanced.

Description

Bone cement capsule

Technical Field

The utility model belongs to the technical field of the capsule technique and specifically relates to a bone cement capsule is related to.

Background

Bone cement is a medical material used in orthopedic surgery, and has a popular name due to its partial physical properties and appearance and properties after setting rather like white cement for construction and decoration. In fact, it is known as bone cement. The main component of the artificial joint replacement material is polymethyl methacrylate and is mainly used for artificial joint replacement surgery.

For convenient storage and transportation, the bone cement consists of a solid part (white powder) and a liquid part (colorless liquid with pungent smell), and when the bone cement is used, the solid part and the liquid part are poured together according to a certain proportion and are blended, so that the polymerization reaction can be carried out at room temperature. Starting like mortar and then like porridge and then becoming dough, can be kneaded, extruded into any shape and finally gradually solidified, the whole process being only a dozen minutes. Before hardening, the surgeon places it on the site where the joint is to be replaced and then attaches the artificial joint. By the end of the reaction, the local temperature rises slightly. Feel slightly hot. At this time, the bone cement, which is as strong as the high-quality building cement, successfully inlays the artificial joint and the human bone and firmly fixes the artificial joint.

In the prior art, the solid part of the bone cement is usually encapsulated in a bone cement capsule, and when the bone cement capsule is used, the liquid part of the bone cement is injected into the bone cement capsule through a syringe, and the solid part of the bone cement is mixed with the liquid part of the bone cement to generate polymerization reaction.

However, in actual use, the solid part and the liquid part in the bone cement capsule may be insufficiently mixed, thereby affecting the use effect of the bone cement.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a bone cement capsule, which solves the technical problem that the mixing of the solid part and the liquid part in the bone cement capsule may be insufficient, thereby affecting the use effect of the bone cement.

In order to realize the above object, the utility model provides a bone cement capsule, including first capsule shell and second capsule shell, first capsule shell with the connection can be dismantled to the second capsule shell, works as first capsule shell with when the second capsule shell is connected, first capsule shell with the chamber is held to the elongated of forming a solid part that is used for encapsulating bone cement between the second capsule shell, the diameter that the chamber was held to the elongated both ends is greater than the diameter that the chamber was held to the elongated middle part is held to the elongated.

In some embodiments, the first capsule shell comprises a first bulge having a first spherical cavity and a first thin neck having a first cylindrical cavity with a diameter smaller than the diameter of the first spherical cavity, the first thin neck being fixedly connected to the first bulge, the first cylindrical cavity being in communication with the first spherical cavity; the second capsule shell comprises a second bulge part and a second thin neck part, the second bulge part is provided with a second spherical cavity, the second thin neck part is provided with a second cylindrical cavity, the diameter of the second cylindrical cavity is smaller than that of the second spherical cavity, the second thin neck part is fixedly connected with the second bulge part, the second cylindrical cavity is communicated with the second spherical cavity, and the second thin neck part is detachably connected with the first thin neck part.

In some embodiments, at least one clamping portion is formed on an outer side wall of the first thin neck portion, the second thin neck portion is sleeved on the first thin neck portion, a clamping groove matched with the clamping portion is formed on an inner side wall of the second thin neck portion, and the clamping portion is used for being embedded into the clamping groove.

In some embodiments, the second bulge has a convex hull formed on an inner wall thereof.

In some embodiments, the first bulge is a first polyetheretherketone bulge.

In some embodiments, the first thin neck portion is a first polyetheretherketone thin neck portion.

In some embodiments, the second bulge is a second polyetheretherketone bulge.

In some embodiments, the second thin neck is a second polyetheretherketone thin neck.

In some embodiments, the second bulge is provided with a clamping groove.

Compared with the prior art, the utility model provides a technical scheme's beneficial effect is: when the bone cement capsule is used, the liquid part of the bone cement is injected into the bone cement capsule through the injector, the first capsule shell is pinched by hands, so that the solid-liquid mixture in the first capsule shell enters the second capsule shell from the middle part of the long accommodating cavity, the second capsule shell is pinched by hands, so that the solid-liquid mixture in the second capsule shell enters the first capsule shell from the middle part of the long accommodating cavity, and the operation is repeated for multiple times, so that the solid-liquid mixture flows back and forth between the first capsule shell and the second capsule shell, and the uniform mixing degree of the solid part and the liquid part of the bone cement can be increased; simultaneously, when the narrow department in middle part that the chamber was held to the long-form process to solid-liquid mixture, the narrow department pressure in middle part is greater than the pressure at both ends to solid-liquid mixture can more abundant mix under the local pressure boost effect of the narrow department in middle part, can strengthen bone cement's result of use.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of a bone cement capsule provided by the present invention;

FIG. 2 is a front view of the bone cement capsule of FIG. 1;

FIG. 3 isbase:Sub>A cross-sectional view taken along section A-A of FIG. 2;

FIG. 4 is an exploded view of the bone cement capsule of FIG. 1;

in the figure: 1-first capsule shell, 11-first bulge, 12-first thin neck, 121-clamping part, 2-second capsule shell, 21-second bulge, 211-convex hull, 212-clamping groove and 22-second thin neck.

Detailed Description

The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

Referring to fig. 1 to 4, the present invention provides a bone cement capsule, including a first capsule shell 1 and a second capsule shell 2, wherein the first capsule shell 1 and the second capsule shell 2 are detachably connected, when the first capsule shell 1 is connected to the second capsule shell 2, an elongated accommodating cavity for accommodating a solid portion of bone cement is formed between the first capsule shell 1 and the second capsule shell 2, and diameters of two ends of the elongated accommodating cavity are greater than a diameter of a middle portion of the elongated accommodating cavity, so as to form a cavity structure with two thick ends and a thin middle portion.

When the bone cement capsule implanting device is used, the bone cement capsule is clamped through the implanting device, then the liquid part of bone cement is injected into the bone cement capsule through the implanting device, the first capsule shell 1 is pinched by hands, so that a solid-liquid mixture in the first capsule shell 1 enters the second capsule shell 2 from the middle part of the long accommodating cavity, the second capsule shell 2 is pinched by hands, so that the solid-liquid mixture in the second capsule shell 2 enters the first capsule shell 1 from the middle part of the long accommodating cavity, the operation is repeated for multiple times, and the solid-liquid mixture flows back and forth between the first capsule shell 1 and the second capsule shell 2, so that the mixing uniformity degree of the solid part and the liquid part of the bone cement can be increased; simultaneously, when the narrow department in middle part that the chamber was held to the elongated to solid-liquid mixture process, the narrow department pressure in middle part is greater than the pressure at both ends to solid-liquid mixture can be more abundant mix under the local pressure boost effect of the narrow department in middle part, can strengthen bone cement's result of use.

To implement the functions of the first capsule shell 1 and the second capsule shell 2, please refer to fig. 1-4, in a preferred embodiment, the first capsule shell 1 includes a first bulge portion 11 and a first thin neck portion 12, the first bulge portion 11 has a first spherical cavity, the first thin neck portion 12 has a first cylindrical cavity, the diameter of the first cylindrical cavity is smaller than that of the first spherical cavity, the first thin neck portion 12 is fixedly connected with the first bulge portion 11, and the first cylindrical cavity is communicated with the first spherical cavity; the second capsule shell 2 comprises a second bulge part 21 and a second thin neck part 22, the second bulge part 21 is provided with a second spherical cavity, the second thin neck part 22 is provided with a second cylindrical cavity, the diameter of the second cylindrical cavity is smaller than that of the second spherical cavity, the second thin neck part 22 is fixedly connected with the second bulge part 21, the second cylindrical cavity is communicated with the second spherical cavity, and the second thin neck part 22 is detachably connected with the first thin neck part 12. In the production process of the bone cement capsule, after the solid part of the bone cement is filled into the first bulge part 11, the second thin neck part 22 is fixedly connected with the first thin neck part 12.

In order to specifically realize the detachable connection between the second thin neck portion 22 and the first thin neck portion 12, referring to fig. 1-4, in a preferred embodiment, at least one fastening portion 121 is formed on an outer side wall of the first thin neck portion 12, the second thin neck portion 22 is sleeved on the first thin neck portion 12, a locking groove matched with the fastening portion 121 is formed on an inner side wall of the second thin neck portion 22, and the fastening portion 121 is configured to be inserted into the locking groove. In this embodiment, the number of the clamping parts 121 corresponds to that of the clamping grooves, and in the production process of the bone cement capsule, after the solid part of the bone cement is loaded into the first bulge part 11, the second thin neck part 22 and the first thin neck part 12 are clamped and fixed with each other through the clamping parts 121 and the clamping grooves.

In order to reduce the amount of liquid leakage when injecting the liquid part of the bone cement, referring to fig. 1-4, in a preferred embodiment, a convex hull 211 is formed on the inner wall of the second bulge 21, and when injecting the liquid part of the bone cement, the needle of the injector is inserted into the capsule from the position of the convex hull 211, and because the thickness of the convex hull 211 is larger, a good seal can be formed between the needle and the convex hull 211, thereby reducing the amount of liquid leakage when injecting the liquid part of the bone cement.

In order to improve the safety of the capsule, referring to fig. 1-4, in a preferred embodiment, the first bulge 11 is a first peek bulge. The first thin neck portion 12 is a first polyetheretherketone thin neck portion. The second bulge 21 is a second peek bulge. The second thin neck part 22 is a second polyetheretherketone thin neck part, that is, all structures of the capsule are made of polyetheretherketone material harmless to human body, so that the safety of the capsule is improved.

In order to facilitate the clamping of the bone cement capsule by the implanter, the second bulge portion 21 is provided with a clamping groove 212, and the clamping groove 212 can be clamped by a clamping head on the implanter, so that the cement capsule with a smooth surface is prevented from being separated from the implanter.

For better understanding of the present invention, the following detailed description of the method for using the bone cement capsule provided by the present invention is provided with reference to fig. 1 to 4: when in use, firstly, the bone cement capsule is inserted into an empty syringe, part of air is pumped out, then the bone cement capsule is clamped by the implanter, then the liquid part of the bone cement is injected into the bone cement capsule by the implanter, the first capsule shell 1 is pinched by hands, so that the solid-liquid mixture in the first capsule shell 1 enters the second capsule shell 2 from the middle part of the long accommodating cavity, the second capsule shell 2 is pinched by hands, the solid-liquid mixture in the second capsule shell 2 enters the first capsule shell 1 from the middle part of the long accommodating cavity, and the above steps are repeated for a plurality of times, so that the solid-liquid mixture flows back and forth between the first capsule shell 1 and the second capsule shell 2, and the mixing uniformity degree of the solid part and the liquid part of the bone cement can be increased; meanwhile, when the solid-liquid mixture passes through the narrow middle part of the long accommodating cavity, the pressure of the narrow middle part is greater than the pressure of the two ends, so that the solid-liquid mixture can be more fully mixed under the local pressurization effect of the narrow middle part, and the using effect of the bone cement can be enhanced; and then, implanting the mixed bone cement capsule to a target position needing to be fixed by using an implanter, then loosening the implanter and withdrawing.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.

Claims

1. The bone cement capsule is characterized by comprising a first capsule shell and a second capsule shell, wherein the first capsule shell and the second capsule shell are detachably connected, when the first capsule shell and the second capsule shell are connected, an elongated accommodating cavity for accommodating a solid part of bone cement is formed between the first capsule shell and the second capsule shell, and the diameters of two ends of the elongated accommodating cavity are larger than that of the middle part of the elongated accommodating cavity.

2. The bone cement capsule according to claim 1, wherein the first capsule shell comprises a first bulge and a first thin neck, the first bulge has a first spherical cavity, the first thin neck has a first cylindrical cavity, the diameter of the first cylindrical cavity is smaller than that of the first spherical cavity, the first thin neck is fixedly connected with the first bulge, and the first cylindrical cavity is communicated with the first spherical cavity;

the second capsule shell comprises a second bulge part and a second thin neck part, the second bulge part is provided with a second spherical cavity, the second thin neck part is provided with a second cylindrical cavity, the diameter of the second cylindrical cavity is smaller than that of the second spherical cavity, the second thin neck part is fixedly connected with the second bulge part, the second cylindrical cavity is communicated with the second spherical cavity, and the second thin neck part is detachably connected with the first thin neck part.

3. The bone cement capsule as claimed in claim 2, wherein at least one clamping part is formed on the outer side wall of the first thin neck part, the second thin neck part is sleeved on the first thin neck part, a clamping groove matched with the clamping part is formed on the inner side wall of the second thin neck part, and the clamping part is used for being embedded into the clamping groove.

4. The bone cement capsule according to claim 2, wherein the second raised portion has a convex hull formed on an inner wall thereof.

5. The bone cement capsule of claim 2, wherein the first bulge is a first polyetheretherketone bulge.

6. The bone cement capsule of claim 2, wherein the first thin neck is a first polyetheretherketone thin neck.

7. The bone cement capsule of claim 2, wherein the second bulge is a second polyetheretherketone bulge.

8. The bone cement capsule of claim 2, wherein the second thin neck is a second polyetheretherketone thin neck.

9. The cement capsule as claimed in claim 2, wherein the second bulge has a slot.