Tension screw suitable for old patients and intra-operative compression failure

Abstract

The lag screw comprises a titanium alloy screw body and an injection channel, the injection channel comprises a plastic pipeline, one end of the plastic pipeline is fixedly connected with a limiting block, the end portion of the limiting block is fixedly connected with a connecting pipe, the end portion of the connecting pipe is connected with a connector, and the connector is fixedly connected with the titanium alloy screw body. A plurality of discharging holes are formed in the tail section of the plastic pipeline, two positioning grooves are formed in the plastic pipeline, the titanium alloy screw comprises a screw body, and a threaded section is arranged on the screw body. According to the lag screw suitable for old patients and intra-operative pressurization failure, the titanium alloy screw is screwed into a bone block, then the injection channel is plugged into the titanium alloy screw, and then an injector is used for injecting a reinforcing agent into the injection channel, so that the periphery of the threaded section of the titanium alloy screw is filled with the reinforcing agent, and broken bones are solidified together; and the grasping force is improved, and the pressurizing effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely is a tension screw suitable for old patient and intraoperative pressurization failure. BACKGROUND

[0002] The current population aging degree is more and more serious in China, and the incidence of brittle fracture is higher and higher, and the tension screw is used to connect and fix the bone block, and the condition required for pressurization is that the screw can be screwed into the bone continuously, and the cutting of thread in the continuous screwing process can cause damage to the surrounding bone tissue, finally forming a cavity in the thread area, so that the holding force between the thread and the bone block is lost, finally making the pressurization screw unable to pressurize, and even unable to complete the fixation of the fracture block, and this phenomenon is more obvious in some small bone blocks and old osteoporosis population, and the traditional tension screw is difficult to provide good pressurization effect on the osteoporosis fracture block. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides a tension screw suitable for old patient and intraoperative pressurization failure, solves the problem that the traditional tension screw is difficult to provide good pressurization effect on the osteoporosis fracture block.

[0004] To achieve the above object, the utility model discloses the following technical scheme: a tension screw suitable for old patient and intraoperative pressurization failure, including titanium alloy screw and the injection channel of dismounting formula ground in titanium alloy screw,

[0005] The injection channel includes a plastic pipeline, one end of the plastic pipeline is fixedly connected with a limiting block, the end of the limiting block is fixedly connected with a connecting pipe, the connecting pipe is connected with a connecting head at the end, a plurality of discharge holes are formed in the tail section of the plastic pipeline, and two positioning grooves are formed in the plastic pipeline.

[0006] The titanium alloy screw includes a nail body, a threaded section is arranged on the nail body, an inlet is formed in one end of the nail body, a through hole is formed in the other end of the nail body, a plurality of communication holes are formed in the threaded section, and a positioning block is fixedly connected to the inner wall surface of the nail body.

[0007] Preferably, the inner diameter of the titanium alloy screw is greater than the outer diameter of the injection channel, and the injection channel is made of plastic material, so that the injection channel can enter the inside of the titanium alloy screw, and the use cost of the injection channel is reduced.

[0008] Preferably, the plastic pipeline is connected with the connecting head, and the other end of the plastic pipeline is provided as a closed end, so that the reinforcing agent entering the inside of the plastic pipeline can only be discharged from the discharge hole.

[0009] Preferably, the plurality of discharge holes are matched with the plurality of communication holes, and the plurality of discharge holes and the plurality of communication holes are one-to-one corresponding, so that the reinforcing agent discharged from the discharge hole can be discharged to the surrounding of the thread segment by the communication hole.

[0010] Preferably, the limiting block is matched with the inlet, and the diameter of the limiting block is greater than the diameter of the plastic pipe, so that the plastic pipe can be limited by the limiting block.

[0011] Preferably, the positioning groove is matched with the positioning block, so that the injection channel can be positioned after entering the titanium alloy screw.

[0012] The utility model provides a kind of tension screw suitable for old patients and intraoperative pressurization failure.Compared with prior art, it has the following beneficial effects:

[0013] 1, the tension screw suitable for old patients and intraoperative pressurization failure, by being screwed into titanium alloy screw into bone block, then injection channel is inserted into titanium alloy screw, and then using syringe injects reinforcing agent into injection channel, so that reinforcing agent fills the surrounding of the thread segment of titanium alloy screw, and broken bone is solidified together, improve grip, improve pressurization effect.

[0014] 2, the tension screw suitable for old patients and intraoperative pressurization failure, by positioning groove and positioning block, so that injection channel can be positioned after entering the titanium alloy screw, so that discharge hole and communication hole are aligned. DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the utility model;

[0016] Figure 2 It is the injection channel structure schematic diagram of the utility model;

[0017] Figure 3 It is the titanium alloy screw structure schematic diagram of the utility model;

[0018] Figure 4 It is the thread segment structure schematic diagram of the utility model.

[0019] In the drawing: 1, injection channel;101, plastic pipe;102, limiting block;103, connecting pipe;104, connecting head;105, discharge hole;106, positioning groove;2, titanium alloy screw;201, nail body;202, thread segment;203, inlet;204, through hole;205, communication hole;206, positioning block. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0021] Please refer to Figures 1-4 The present application provides a technical solution: a tension screw suitable for old patients and intraoperative pressure failure, comprising a titanium alloy screw 2 and an injection channel 1 detachably arranged in the titanium alloy screw 2. The inner diameter of the titanium alloy screw 2 is larger than the outer diameter of the injection channel 1. The injection channel 1 is made of plastic material, so that the injection channel 1 can enter the inside of the titanium alloy screw 2 and reduce the use cost of the injection channel 1. The titanium alloy screw 2 can be screwed into the bone block, then the injection channel 1 is inserted into the inside of the titanium alloy screw 2, and then the syringe is used to inject the reinforcing agent into the inside of the injection channel 1, so that the reinforcing agent fills around the threaded section 202 of the titanium alloy screw 2, solidifies the broken bone together, improves the gripping force, and improves the pressure effect.

[0022] The injection channel 1 comprises a plastic pipeline 101, one end of the plastic pipeline 101 is fixedly connected with a limiting block 102, the end of the limiting block 102 is fixedly connected with a connecting pipe 103, the end of the connecting pipe 103 is connected with a connecting head 104, so that the injection channel 1 can be conveniently connected with the syringe, the reinforcing agent can be conveniently injected into the inside of the plastic pipeline 101, the plastic pipeline 101 is in communication with the connecting head 104, the other end of the plastic pipeline 101 is arranged as a closed end, so that the reinforcing agent entering the inside of the plastic pipeline 101 can only be discharged from the discharge holes 105, a plurality of discharge holes 105 are formed in the tail section of the plastic pipeline 101, two positioning grooves 106 are formed in the plastic pipeline 101, and the plastic pipeline 101 can be positioned by cooperating with the positioning block 206.

[0023] The titanium alloy screw 2 comprises a screw body 201, the screw body 201 is provided with a threaded section 202, one end of the screw body 201 is provided with an entrance 203, the limiting block 102 is matched with the entrance 203, the diameter of the limiting block 102 is larger than the diameter of the plastic pipe 101, so that the limiting block 102 can be used to limit the plastic pipe 101, the other end of the screw body 201 is provided with a through hole 204, a plurality of communication holes 205 are arranged on the threaded section 202, a plurality of discharge holes 105 are matched with the plurality of communication holes 205, and the plurality of discharge holes 105 and the plurality of communication holes 205 are one-to-one corresponding, so that the reinforcing agent discharged from the discharge hole 105 can be discharged to the surrounding of the threaded section 202 through the communication hole 205, the inner wall surface of the screw body 201 is fixedly connected with a positioning block 206, the positioning groove 106 is matched with the positioning block 206, so that after the injection channel 1 enters the inside of the titanium alloy screw 2, the injection channel 1 can be positioned, and the discharge hole 105 is aligned with the communication hole 205.

[0024] In work, first, the titanium alloy screw 2 is screwed into the bone block, then the injection channel 1 is put into the inside of the titanium alloy screw 2, then the syringe is connected with the connecting head 104 in communication, the reinforcing agent is injected into the inside of the injection channel 1, the reinforcing agent is discharged from the discharge hole 105, and then discharged from the communication hole 205 and the through hole 204 on the titanium alloy screw 2, and filled around the threaded section 202, until the reinforcing agent is solidified to a certain degree, and has been shaped, and is gelatinized but not completely liquefied, the injection channel 1 is extracted, and then after the reinforcing agent is completely solidified, the area can be filled or the broken bone is solidified together, so as to provide more stable holding force for the threaded section 202, and improve the pressing effect.

[0025] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

Claims

1. A tension screw suitable for use in elderly patients and in cases of intraoperative pressurization failure, characterized in that: Titanium alloy screw (2) and injection channel (1) detachably arranged in the titanium alloy screw (2) are included; The injection channel (1) comprises a plastic pipeline (101), one end of the plastic pipeline (101) is fixedly connected with a limiting block (102), the end of the limiting block (102) is fixedly connected with a connecting pipe (103), the end of the connecting pipe (103) is connected with a connector (104), a plurality of discharge holes (105) are formed in the tail section of the plastic pipeline (101), and two positioning grooves (106) are formed in the plastic pipeline (101). The titanium alloy screw (2) comprises a nail body (201), the nail body (201) is provided with a threaded section (202), one end of the nail body (201) is provided with an inlet (203), the other end of the nail body (201) is provided with a through hole (204), a plurality of communication holes (205) are formed in the threaded section (202), and the inner wall surface of the nail body (201) is fixedly connected with a positioning block (206).

2. A pull screw suitable for use in elderly patients and for intraoperative pressurization failure according to claim 1, characterized in that: The inner diameter of the titanium alloy screw (2) is greater than the outer diameter of the injection channel (1), and the injection channel (1) is made of plastic material.

3. A pull screw suitable for geriatric patients and intraoperative pressurization failure according to claim 1, characterized in that: The plastic pipeline (101) is connected with the connector (104), and the other end of the plastic pipeline (101) is provided as a closed end.

4. A pull screw suitable for geriatric patients and intraoperative pressurization failure according to claim 1, characterized in that: The plurality of discharge holes (105) are matched with the plurality of communication holes (205), and the plurality of discharge holes (105) and the plurality of communication holes (205) are one-to-one corresponding.

5. A pull screw suitable for geriatric patients and intraoperative pressurization failure according to claim 1, characterized in that: The limiting block (102) is matched with the inlet (203), and the diameter of the limiting block (102) is greater than the diameter of the plastic pipeline (101).

6. A pull screw suitable for geriatric patients and intraoperative pressurization failure according to claim 1, characterized in that: The positioning groove (106) is matched with the positioning block (206).

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