A bone cement antibiotic inner rod preparation tool and preparation method thereof

Abstract

The present invention discloses a bone cement antibiotic inner rod preparation tool and a preparation method thereof, and specifically relates to the technical field of medical devices. The bone cement antibiotic inner rod preparation tool and a preparation method thereof provided by the present invention are designed by designing a sleeve and a rod body. The sleeve body is a hollow cylindrical shape, with openings at both ends, and is formed by two sleeve bodies hinged along the cylindrical generatrix at the distal end, and a gap is provided at the proximal end. The rod body is composed of a pull ring, a connecting rod, and an olive head. Antibiotic bone water can be injected into the sleeve for shaping, so that orthopedic surgeons do not have to manually make antibiotic bone cement rods, which improves the production quality of antibiotic bone cement rods, simplifies the production steps and reduces the production difficulty. At the same time, the antibiotic bone cement rods made are uniform in shape and high in quality, which improves the effect of use and treatment.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a tool for preparing a bone cement antibiotic inner rod and a method for preparing the tool. Background Art

[0002] Bone cement is the common name for bone adhesive, which is a medical material used in orthopedic surgery. Antibiotic cement is bone cement with antibiotics added to prevent and treat infection after artificial joint replacement surgery.

[0003] Current Problems

[0004] When preparing antibiotic bone cement, orthopedic surgeons need to manually prepare antibiotic bone cement rods, and the production steps are cumbersome. More importantly, due to different experiences of doctors, the shape and quality of the prepared antibiotic bone cement may vary, affecting the use and treatment effects. At the same time, after the treatment is completed, it is very difficult to remove the currently manually prepared antibiotic bone cement rods from the patient's bones. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides a bone cement antibiotic inner rod preparation tool and a method for using the same, which solves the above problems by designing a sleeve and a rod body.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A bone cement antibiotic inner rod preparation tool comprises a sleeve and a rod body, wherein the sleeve body is a hollow cylindrical shape, and is formed by two sleeve bodies hinged at one side of the distal end along the cylindrical generatrix, the upper end of the sleeve body is open, and the bottom end is provided with a semicircular base, and the center position of the semicircular base is provided with a semicircular convex column protruding upward, and a gap is provided between the two sleeve bodies. After the two sleeve bodies are fitted to eliminate the gap, the two convex columns are surrounded to form an insertion hole, and the bottom end position of the sleeve body is a gradual portion with a gradually decreasing circumference from top to bottom, and a slide groove is provided along the generatrix at the distal end of the sleeve, and the slide groove is used to place the rod body, and the rod body is connected by a pull ring, a connection ring, and a connection ring. The pull ring is connected to the top of the vertical connecting rod, the rear end of the olive head is connected to the connecting rod and is integrally formed with the olive head, the olive head is used to be inserted into the jack and fixed in the jack to form an interference fit, a plurality of spring buckles are arranged at the proximal end of the left sleeve of the jack, the spring buckles are composed of a base and a spring button, the base extends to the right sleeve, the upper end of the base is connected to the spring button through a spring, a plurality of slots that can cooperate with the spring buckles are arranged at the proximal end of the right sleeve, a channel is arranged at the front end gap of the slot connection, and the channel directly passes through the slot;

[0008] The diameter of the base is the same as the diameter of the gradual transition portion at the bottom of the sleeve when it shrinks to the minimum.

[0009] As another preferred solution, the edges of the upper and lower ends of the sleeve are rounded.

[0010] As another preferred solution, the length of the rod body is longer than that of the sleeve body, and the pull ring is located outside the upper end of the sleeve barrel.

[0011] As another preferred solution, the pull ring body of the rod body is in the shape of a hollow cylinder, the inner wall of the pull ring body is provided with an internal thread, and the pull ring is connected to the connecting rod in parallel or vertically.

[0012] As another preferred solution, the spring button is a square button, the slot is a square groove, and when the base is fully inserted into the slot, the proximal ends of the sleeves on the left and right sides fit together.

[0013] As another preferred solution, a scale mark is provided on the outer wall of the left sleeve body along the vertical direction near the gap position, the scale mark has a marking range of 10-36 cm, and the progress of each scale mark is 1 or 2 cm.

[0014] As another preferred embodiment, the diameter of the sleeve body is divided into five categories, namely 7 cm, 8 cm, 9 cm, 10 cm and 11 cm, and the antibiotic bone cement produced can suit the needs of most patients.

[0015] As another preferred solution, the diameter of the connecting rod is 2.8 cm.

[0016] Another object of the present invention is to provide a method for preparing a bone cement antibiotic inner rod preparation tool: the method is characterized in that: the spring buckle on the left side is inserted into the slot to make the sleeve into a cylindrical barrel shape, the rod body is inserted into the sleeve, and the olive head is inserted into the socket to make the rod body located on the central axis of the sleeve, antibiotic water bone cement is injected into the sleeve, and the antibiotic bone cement is molded into the shape of the sleeve. After it is formed, the spring button is pressed to separate the two sleeves, and a surgical tool with a thread is used to rotate and connect it to the pull ring. One hand holds the friction texture of the sleeve, and the other hand uses the tool to apply force to the outside to pull out the entire rod body, and the rod body drives the formed antibiotic bone cement. The spring button is pressed to separate the two sleeves, and the rod body with antibiotic bone cement can be taken out for the patient.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The bone cement antibiotic inner rod preparation tool designed by the present invention:

[0019] 1. By designing a sleeve, the sleeve serves as a container for antibiotic bone cement, and antibiotic bone water can be injected into the sleeve for shaping, so that orthopedic surgeons do not have to manually make antibiotic bone cement rods, thereby improving the production quality of antibiotic bone cement rods, simplifying the production steps and reducing the production difficulty. At the same time, the antibiotic bone cement rods made have a uniform shape and high quality, which improves the effect of use and treatment.

[0020] 2. By designing a rod body, a spring button, and a pull ring on the rod body, after the antibiotic bone cement is used up, the two sleeves can be separated by pressing the spring button, and an external tool can be used to rotate the pull ring through the threaded fit, so that the shaped bone cement can be easily taken out.

[0021] More importantly, the present invention has a simple structure, is easy to operate, is low in price, can be reused, and is easy to promote and use in major hospitals.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of the tool for preparing the bone cement antibiotic inner rod of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the sleeve of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the rod body of the present invention;

[0027] Figure 4 It is an enlarged view of a part of the structure of the sleeve of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the base of the present invention;

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1- sleeve, 101- sleeve body, 102- spring buckle, 103- slot, 104- gap, 105- gradient part, 106- base, 107- spring button, 108- spring, 109- slide groove, 110- friction pattern, 111- scale mark, 112- base, 113- socket, 114- boss, 2- rod body, 201- pull ring, 202- connecting rod, 203- olive head. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-5 Shown

[0033] A bone cement antibiotic inner rod preparation tool, comprising a sleeve 1 and a rod body 2, wherein the main body of the sleeve 1 is a hollow cylinder, and is formed by two sleeve bodies 101 being hinged at one side of the distal end along the cylindrical generatrix, the upper end of the sleeve body 101 is open, and the bottom end is provided with a semicircular base, and a semicircular convex column 114 protruding upward is provided at the center position of the semicircular base, and a gap 104 is provided between the two sleeve bodies 101, and after the two sleeve bodies 101 are fitted to eliminate the gap 104, the two convex columns 114 surround to form an insertion hole 113, and the bottom end position of the sleeve body 1 is a gradual change portion 106 whose circumference gradually decreases from top to bottom, and a slide groove 109 is provided along the generatrix at the distal end of the sleeve 1, and the slide groove 109 is used to place the rod body;

[0034] The rod body 2 is composed of a pull ring 201, a connecting rod 202, and an olive head 203. The pull ring 201 is connected to the top of the vertical connecting rod 202. The rear end of the olive head 203 is connected to the connecting rod 202 and is formed integrally therewith. The olive head 203 is used to be inserted into the slot 113 and fixed in the jack to form an interference fit.

[0035] A plurality of spring buckles 102 are provided at the proximal end of the left sleeve 101. The spring buckles 102 are composed of a base 106 and a spring button 107. The base 106 extends toward the right sleeve 101. The upper end of the base 105 is connected to the spring button 107 through a spring 108. A plurality of slots 103 that can cooperate with the spring buckles 102 are provided at the proximal end of the right sleeve 101. A channel is provided at the front end gap of the slots 103, and the channel directly passes through the slots 103.

[0036] The diameter of the base 203 is the same as the diameter of the bottommost gradual change portion 105 of the sleeve 1 when it is contracted to the minimum.

[0037] As another preferred solution, the edges of the upper and lower ends of the sleeve 1 are rounded.

[0038] As another preferred solution, the rod body 2 is longer than the sleeve body 1 , and the pull ring 201 is located outside the upper end of the sleeve barrel 1 .

[0039] As another preferred solution, the main body of the pull ring 201 of the rod body 2 is in the shape of a hollow cylinder, the inner wall of the main body of the pull ring 201 is provided with an internal thread, and the pull ring 201 is connected to the connecting rod 202 in parallel or vertically.

[0040] As another preferred solution, the spring button 107 is a square button, the slot 103 is a square groove, and when the base 106 is fully inserted into the slot 103, the proximal ends of the sleeve 101 on the left and right sides fit together.

[0041] As another preferred solution, a scale mark 111 is provided on the outer wall of the left sleeve body along the vertical direction near the gap position, the scale mark 111 has a marking range of 10-36 cm, and the progress of each scale mark is 1 or 2 cm.

[0042] As another preferred embodiment, the sizes of the sleeve body 101 are classified into five categories, namely 7 cm, 8 cm, 9 cm, 10 cm and 11 cm.

[0043] As another preferred solution, the diameter of the connecting rod 202 is 2.8 cm.

[0044] The technical solution of the present invention is described below in conjunction with specific embodiments:

[0045] Example 1

[0046] A bone cement antibiotic inner rod preparation tool, comprising a sleeve 1 and a rod body 2. The main body of the sleeve 1 is a hollow cylinder, which is formed by two sleeves 101 hinged at the distal end along the cylindrical generatrix. The upper end of the sleeve 101 is open, and the bottom end is provided with a semicircular base. The center position of the semicircular base is provided with a semicircular convex column 114 protruding upward. A gap 104 is provided between the two sleeves 101. After the two sleeves 101 are fitted to eliminate the gap 104, the two convex columns 114 surround to form a plug hole 113. The bottom of the sleeve 1 At the end position is a gradient portion 106 whose circumference gradually decreases from top to bottom. A slide groove 109 is provided along the busbar at the far end of the sleeve 1. The slide groove 109 is used to place the rod body. The rod body 2 is composed of a pull ring 201, a connecting rod 202, and an olive head 203. The pull ring 201 is connected to the top of the vertical connecting rod 202. The rear end of the olive head 203 is connected to the connecting rod 202 and is integrally formed with it. The olive head 203 is used to be inserted into the slot 113 and fixed in the socket to form an interference fit.

[0047] Example 2

[0048] The bottom end of the sleeve body 1 is a gradient portion 106 whose circumference gradually decreases from top to bottom. A slide groove 109 is provided along the generatrix at the distal end of the sleeve 1. The slide groove 109 is used to place the connecting rod 202 of the rod body. The sleeve body 101 has five sizes, namely 7cm, 8cm, 9cm, 10cm, and 11cm, which can adapt to most patients.

[0049] Example 3

[0050] Based on Example 1-2, a preparation method of a bone cement antibiotic inner rod preparation tool: During the specific implementation, the spring buckle 102 on the left is inserted into the slot to make the sleeve 1 into a cylindrical barrel shape, the rod body 2 is inserted into the sleeve, and the olive head is inserted into the socket so that the rod body is located on the central axis of the sleeve, and the antibiotic water bone cement is injected into the sleeve 1. The antibiotic bone cement is molded into the shape of the sleeve 1. After it is formed, the spring button 107 is pressed to separate the two sleeves 101, and a surgical tool with a thread is used to rotate and connect it to the pull ring 201. Hold the friction pattern 110 of the sleeve 1 with one hand, and use a tool with the other hand to apply force to the outside to pull out the entire rod body 101, so that the rod body drives the formed antibiotic bone cement to separate from the sleeve 1, and the formed antibiotic bone cement is separated from the sleeve body 101, and the rod body containing the antibiotic bone cement can be taken out for the patient; that is, orthopedic surgeons do not need to manually make antibiotic bone cement rods, which improves the production quality of antibiotic bone cement rods, simplifies the production steps and reduces the production difficulty. At the same time, the antibiotic bone cement rods made have uniform shape and high quality, which improves the effect of use and treatment.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bone cement antibiotic inner rod preparation tool, characterized in that: It includes a sleeve and a rod body. The sleeve body is a hollow cylinder, which is formed by two sleeve bodies hinged at one side of the distal end along the cylindrical generatrix. The upper end of the sleeve body is open, and the bottom end is provided with a semicircular base. The center position of the semicircular base is provided with a semicircular convex column protruding upward. There is a gap between the two sleeve bodies. After the two sleeve bodies are fitted to eliminate the gap, the two convex columns are surrounded to form a plug hole. The bottom end of the sleeve body is a gradual change portion with a gradually decreasing circumference from top to bottom. The distal end of the sleeve is provided with a slide groove along the generatrix, and the slide groove is used to place the rod body. The rod body is composed of a pull ring, a connecting rod, and an olive head. The pull ring is connected to the top end of the vertical connecting rod. The rear end of the olive head is connected to the connecting rod and is formed integrally with the connecting rod. The olive head is used to be inserted into the slot and fixed in the jack to form an interference fit. A plurality of spring buckles are provided at the proximal end of the left sleeve body, and the spring buckles are composed of a base and a spring button. The base extends toward the right sleeve body, and the upper end of the base is connected to the spring button through a spring. A plurality of slots that can cooperate with the spring buckles are provided at the proximal end of the right sleeve body, and a channel is provided at the front end gap where the slots are connected, and the channel directly passes through the slots; The length of the rod body is longer than that of the sleeve body, and the pull ring is located outside the upper end of the sleeve barrel; The pull ring body of the rod body is in a hollow cylindrical shape, the inner wall of the pull ring body is provided with an internal thread, and the pull ring is connected to the connecting rod in parallel or vertically; The outer side of the sleeve is provided with friction lines for hand holding.

2. The bone cement antibiotic inner rod preparation tool according to claim 1, characterized in that: The spring button is a square button, the slot is a square groove, and when the base is fully inserted into the slot, the proximal ends of the sleeves on the left and right sides fit together.

3. The bone cement antibiotic inner rod preparation tool according to claim 1, characterized in that: The edges of the upper and lower ends of the sleeve are rounded.

4. The bone cement antibiotic inner rod preparation tool according to claim 1, characterized in that: The left sleeve is provided with scale marks on the outer wall along the vertical direction of the sleeve near the gap position, the scale marks have a marking range of 10-36 cm, and the progress of each scale mark is 1 or 2 cm.

5. The bone cement antibiotic inner rod preparation tool according to claim 1, characterized in that: The diameter of the sleeve body is divided into five categories, namely 7cm, 8cm, 9cm, 10cm and 11cm, and the antibiotic bone cement produced can suit most patients.

6. The bone cement antibiotic inner rod preparation tool according to claim 1, characterized in that: The diameter of the connecting rod is 2.8 cm.

7. The bone cement antibiotic inner rod preparation tool according to claim 1, characterized in that: Insert the spring buckle on the left into the slot to make the sleeve cylindrical, insert the rod into the sleeve, and let the base be at the bottom of the sleeve, inject antibiotic bone cement into the sleeve, and the antibiotic bone cement is molded into the shape of the sleeve. After it is formed, press the spring button to separate the two sleeves, use a surgical tool with a thread, rotate it into the pull ring, hold the friction texture of the sleeve with one hand, and use the tool with the other hand to apply force to the outside world to pull out the entire rod, and the rod drives the formed antibiotic bone cement. Press the spring button to separate the two sleeves, and the antibiotic bone cement can be taken out for the patient.

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