CN219166581U - Puncture outfit clamping mechanism - Google Patents

Abstract

A puncture device clamping mechanism is provided with a clamping part, a connecting rod fixedly assembled with the clamping part, and an elastic locking mechanism. Wherein the clamping part is provided with a clamping through hole and a locking through hole. The connecting rod is provided with an inner cavity, and the end of the connecting rod is fixed and communicated with the locking through hole. Wherein the elastic locking mechanism is movably assembled in the inner cavity of the connecting rod, and one end of the elastic locking mechanism can extend into or withdraw from the clamping through hole from the locking through hole. The clamping mechanism of the puncture device is only composed of a clamping part, a connecting rod and an elastic locking mechanism, the overall structure is simple, and the operation is convenient. The clamping and loosening of the puncture device is realized by setting an elastic locking mechanism, the operation is convenient and fast, and the clamping is firm.

Description

Puncture device clamping mechanism

technical field

The utility model relates to the technical field of medical devices, in particular to a clamping mechanism for a puncture device.

Background technique

Puncture is a minimally invasive diagnosis and treatment technique in which a puncture needle is inserted into a body cavity to inject drugs or contrast agents for contrast examination or to extract tissues and secretions for laboratory tests. In some surgical operations, after the puncture needle is inserted into the patient, the medical staff will leave the puncture needle in the lesion to provide a channel for further treatment, such as ablation surgery for cancer treatment, radiofrequency ablation surgery for herniated lumbar intervertebral disc, intervertebral disc surgery, etc. Holoscopic surgery, etc. If only human hands are used to maintain and fix the puncture needle during the operation, over time, the hands will inevitably shake, causing the puncture needle to deviate, easily damaging important tissues such as nerves and blood vessels around the lesion, and causing secondary damage to the patient. It also affects the accuracy of the operation and affects the therapeutic effect.

At present, surgical manipulators are widely used in minimally invasive puncture, but there are not many clamping devices for puncture needles. In the prior art, in the field of experiments and medical treatment, the commonly used clamping tool is a screw clamping device, which is directly clamped by the screw or combined with other elements to realize the clamping of the puncture device. However, its disadvantage is that the clamping and loosening actions are relatively slow, which cannot meet the short-term and high-efficiency requirements of the puncture operation. In addition, there is another kind of clamping tool that imitates the principle that people use thumb and forefinger to pinch objects, and sets left and right movable clamping parts to realize clamping of puncture instruments, but its disadvantage is that the clamping is not firm and the structure is complicated.

Therefore, in view of the deficiencies of the prior art, it is necessary to provide a puncture device clamping mechanism with simple structure, firm clamping and convenient clamping to solve the deficiencies of the prior art.

Contents of the invention

The purpose of the utility model is to avoid the disadvantages of the prior art and provide a puncture device clamping mechanism. The clamping mechanism of the puncture device has a simple structure, firmly clamps the puncture device, and is convenient and quick to operate.

Above-mentioned purpose of the utility model is realized through the following technical measures:

Provided is a puncture device clamping mechanism, which is provided with a clamping part, a connecting rod fixedly assembled with the clamping part, and an elastic locking structure.

Wherein, the clamping part is provided with a clamping through hole and a locking through hole. The connecting rod is provided with an inner cavity, and the end of the connecting rod is fixed and communicated with the locking through hole.

Wherein, the elastic locking mechanism is movably assembled in the inner cavity of the connecting rod, and one end of the elastic locking mechanism can extend into or withdraw from the clamping through hole from the locking through hole.

Specifically, the elastic locking mechanism is provided with a main body, an abutment portion, a tail portion and a spring. The abutting portion and the tail portion are respectively fixed on two ends of the main body, wherein a spring is sheathed on the tail portion, and one end of the spring abuts against the main body, and the other end of the spring abuts against the inner chamber of the connecting rod.

The diameter of the body matches the lumen of the connecting rod.

Specifically, the end of the contact portion is flat, and the thickness from the end to the main body gradually increases.

Specifically, a positioning notch for positioning the puncture device is provided at the end of the abutting portion.

Specifically, the surface of the positioning notch is also provided with an elastic anti-skid layer.

Specifically, symmetrically distributed push-pull pieces are fixed on the surface of the main body.

Wherein, the connecting rod is provided with a push-pull through groove matched with the push-pull piece.

Wherein, the push-pull part protrudes from the outer wall of the connecting rod through the push-pull slot.

Wherein, the length of the push-pull through groove is longer than that of the push-pull member and the displacement of the push-pull member in the push-pull through groove is greater than or equal to the diameter of the clamping through hole.

Specifically, the push-pull part is detachably fixed to the main body.

Wherein, the push-pull piece is an integral sheet structure with a first screw hole on the surface.

Wherein, the main body is provided with a push-pull slot for accommodating the push-pull piece and a second screw hole perpendicular to the push-pull through groove; the push-pull piece is fixed to the main body through the second screw hole and the first screw hole successively by screws; or

The connecting rod is provided with a third screw hole opposite to the second screw hole, and the push-pull member is fixed to the main body through the third screw hole, the second screw hole and the first screw hole successively by screws.

Wherein, the length of the push-pull part is greater than the diameter of the main body.

Specifically, the hole wall of the clamping through hole is also provided with a positioning groove.

Wherein, the direction of the positioning groove is the same as the axial direction of the clamping through hole.

Wherein, the positioning groove is arranged opposite to the locking through hole.

Specifically, anti-slip lines are provided on the surface of the push-pull member.

Specifically, the tail of the elastic locking mechanism is a cylinder with a diameter smaller than that of the main body.

Among them, the junction of the cylinder and the main body forms a circular platform.

Wherein, the spring is sheathed on the periphery of the cylinder and abuts against the ring platform.

A puncture device clamping mechanism of the utility model is provided with a clamping part, a connecting rod fixedly assembled with the clamping part, and an elastic locking mechanism. Wherein the clamping part is provided with a clamping through hole and a locking through hole. The connecting rod is provided with an inner cavity, and the end of the connecting rod is fixed and communicated with the locking through hole. Wherein the elastic locking mechanism is movably assembled in the inner cavity of the connecting rod, and one end of the elastic locking mechanism can extend into or out of the clamping through hole from the locking through hole. The clamping mechanism of the puncture device is only composed of a clamping part, a connecting rod and an elastic locking mechanism, the overall structure is simple, and the operation is convenient. The clamping and loosening of the puncture device is realized by setting an elastic locking mechanism, the operation is convenient and fast, and the clamping is firm.

Description of drawings

Utilize accompanying drawing to further illustrate the utility model, but the content in the accompanying drawing does not constitute any limitation to the utility model.

Fig. 1 is a schematic structural view of a puncture device clamping mechanism.

FIG. 2 is an assembly diagram of FIG. 1 .

Fig. 3 is another perspective view of the connecting rod in Fig. 2 .

FIG. 4 is another perspective view of the elastic locking mechanism in FIG. 2 .

Fig. 5 is an exploded view of the elastic locking mechanism and a schematic diagram of the corresponding position of the connecting rod.

Fig. 6 is a cross-sectional view of the puncture device clamping mechanism.

In Figures 1 to 6, including:

clamping part 100,

Clamping through hole 110, locking through hole 120, positioning groove 130,

connecting rod 200,

inner cavity 210, push-pull through groove 220, third screw hole 230,

elastic locking mechanism 300,

The main body 310, the contact part 320, the tail part 330, the spring 340,

Push-pull piece 311, push-pull slot 312, second screw hole 313, screw 314,

The first screw hole 3111,

positioning gap 321,

Ring platform 331.

Detailed ways

The technical solution of the utility model is further described in conjunction with the following examples.

Example 1.

A puncture device clamping mechanism, as shown in FIGS. 1 to 3 and 6 , is provided with a clamping part 100 , a connecting rod 200 fixedly assembled with the clamping part 100 , and an elastic locking structure 300 .

Wherein, the clamping portion 100 is provided with a clamping through hole 110 and a locking through hole 120 . The connecting rod 200 is provided with an inner cavity 210 , and the end of the connecting rod 200 is fixed and communicated with the locking through hole 120 .

The included angle between the axes of the clamping through hole 110 and the locking through hole 120 is a right angle or an acute angle.

Wherein, the elastic locking mechanism 300 is movably assembled in the inner chamber 210 of the connecting rod 200 , and one end of the elastic locking mechanism 300 can extend into or exit the clamping through hole 110 from the locking through hole 120 .

The inner cavity 210 of the connecting rod 200 is U-shaped, and the end of the inner cavity 210 away from the clamping part 100 is a closed bottom of the inner cavity 210, and the bottom of the inner cavity 210 abuts against the elastic locking mechanism 300 to provide support. The other end of the inner cavity 210 is open and communicates with the locking through hole 120 . In addition, the diameter of the inner cavity 210 is smaller than or equal to the diameter of the locking through hole 120 .

In this puncture device clamping mechanism, a locking through hole 120 is added in the clamping part 100 , and an elastic locking mechanism 300 is provided in the inner cavity 210 of the connecting rod 200 . The elastic locking mechanism 300 can extend from the lumen 210 of the connecting rod 200 into the clamping through hole 110 of the clamping part 100 through the locking through hole 120 to further lock the puncture device in the clamping through hole 110 . This device further improves the firmness of the clamping part 100 clamping the puncture device.

Example 2.

A clamping mechanism for a puncture device, the other features of which are the same as in Embodiment 1, as shown in Figures 2 and 4, and also have the following features:

The elastic locking mechanism 300 is provided with a main body 310 , an abutting portion 320 , a tail portion 330 and a spring 340 . The abutting portion 320 and the tail portion 330 are respectively fixed on both ends of the main body 310 , wherein a spring 340 is sheathed on the tail portion 330 , and one end of the spring 340 abuts against the main body 310 , and the other end of the spring 340 abuts against the inner cavity of the connecting rod 200 210.

Under the force of the spring 340, the abutting portion 320 extends from the inner chamber 210 of the connecting rod 200 into the clamping through hole 110, and the abutting portion 320 directly abuts against the puncture instrument in the clamping through hole 110, Limit the positional movement of the piercing instrument.

The diameter of the main body 310 matches the lumen 210 of the connecting rod 200 . The diameter of the body 310 is smaller than the diameter of the lumen 210 so that the body 310 moves in the lumen 210 .

The elastic locking mechanism 300 of the puncture device clamping mechanism is only composed of a main body 310, an abutment portion 320, a tail portion 330 and a spring 340, and has the advantages of simple structure and low cost.

Example 3.

A clamping mechanism for a puncture device, the other features of which are the same as in Embodiment 2, as shown in Figure 4, and also have the following features:

The end of the abutting portion 320 is flat, and the thickness from the end to the main body 310 gradually increases.

The abutting portion 320 of the puncture device clamping mechanism has a flat structure, the contact area with the puncture device is small, the force per unit area is greater, and the fixation is more secure.

Example 4.

A clamping mechanism for a puncture device, the other features of which are the same as those of Embodiment 3, as shown in Figure 4, and also have the following features:

The end of the abutting portion 320 is provided with a positioning notch 321 for positioning the puncturing device.

It should be noted that the shape of the positioning notch 321 is not limited to U-shaped, rectangular, circular or triangular, etc. When the shape of the positioning notch 321 is U-shaped, the effect of fixing the position of the puncture device is the best.

The positioning notch 321 of the puncturing device clamping mechanism can limit the puncturing device or part of the device in the recess of the notch, has a positioning effect on the puncturing device, and prevents the puncturing device from shifting.

Example 5.

A puncture device clamping mechanism, other features are the same as in Embodiment 4, and also has the following features:

The surface of the positioning notch 321 is also provided with an elastic anti-skid layer.

The anti-slip layer has a certain degree of elasticity, which can prevent the puncture device from being scratched. The material of the anti-slip layer can be natural rubber, polyvinyl chloride, silica gel, etc. When the anti-slip layer is made of silica gel, it has the best anti-slip and elastic effect.

The positioning gap 321 of the puncture device clamping mechanism is provided with an elastic anti-slip layer, which can increase the friction force on the puncture device, thereby increasing the clamping firmness of the puncture device. At the same time, the anti-slip layer has a certain degree of elasticity, and can also avoid scratching the puncture device. .

Example 6.

A clamping mechanism for a puncture device, the other features of which are the same as those of Embodiment 1, as shown in Figures 1 to 4, and also have the following features:

The surface of the main body 310 is fixed with symmetrically distributed push-pull elements 311 .

The symmetrical layout conforms to the habit of pushing and pulling the index finger and thumb at the same time.

Wherein, the connecting rod 200 is provided with a push-pull through groove 220 matched with the push-pull member 311 .

Wherein, the push-pull member 311 protrudes from the outer wall of the connecting rod 200 through the push-pull slot 220 .

Wherein, the length of the push-pull slot 220 is greater than that of the push-pull member 311 and the displacement of the push-pull member 311 in the push-pull slot 220 is greater than or equal to the diameter of the clamping through hole 110 .

In the puncture device clamping mechanism, a push-pull member 311 is provided on the locking body 310 and a matching push-pull slot 220 is provided on the connecting rod 200 . By pushing or pulling the push-pull part 311 on the outside of the connecting rod 200, the elastic locking mechanism 300 assembled in the inner cavity 210 of the connecting rod 200 can be pushed into the clamping part 100 or pulled out of the clamping part 100, thereby completing the alignment of the clamping part. The locking and unlocking of the puncture device in 100 has the characteristics of simple and quick operation.

Example 7.

A puncture device clamping mechanism, other features are the same as in Embodiment 1, as shown in Figure 5, and also has the following features:

The push-pull part 311 is detachably fixed on the main body 310 .

Wherein, the push-pull member 311 is an integral sheet structure with a first screw hole 3111 on the surface.

Wherein, the main body 310 is provided with a push-pull slot 312 for accommodating the push-pull member 311 and a second screw hole 313 perpendicular to the push-pull through groove 220 .

Wherein, the connecting rod 200 is provided with a third screw hole 230 opposite to the second screw hole 313 .

Wherein, the push-pull member 311 is fixed to the main body 310 by the screw 314 passing through the third screw hole 230 , the second screw hole 313 and the first screw hole 3111 successively.

Wherein, the length of the push-pull member 311 is greater than the diameter of the main body 310 .

The push-pull part 311 of the puncture device clamping mechanism is fixed by being inserted into the push-pull slot 312 of the main body 310. The push-pull part 311 and the main body 310 adopt a split structure, which can facilitate the disassembly and installation of the push-pull part 311. The push-pull part 311 is provided with a first screw hole 3111 for fixing and a second screw hole 313 matching it is provided on the main body 310, and the screw 314 penetrates the second screw hole 313 and the first screw hole 3111 to push the push-pull part 311 fixed on the main body 310. This fixing method further strengthens the fixing of the push-pull member 311 .

Example 8.

A clamping mechanism for a puncture instrument, other features are the same as those in Embodiment 7, except that the third screw hole 230 opposite to the second screw hole 313 is no longer provided on the connecting rod 200 . The push-pull member 311 is fixed to the main body 310 by the screw 314 through the second screw hole 313 and the first screw hole 3111 successively.

The push-pull part 311 of the puncture device clamping mechanism is fixed by being inserted into the push-pull slot 312 of the main body 310. The push-pull part 311 and the main body 310 adopt a split structure, which can facilitate the disassembly and installation of the push-pull part 311. The push-pull part 311 is provided with a first screw hole 3111 for fixing and a second screw hole 313 matching it is provided on the main body 310, and the screw 314 penetrates the second screw hole 313 and the first screw hole 3111 to push the push-pull part 311 fixed on the main body 310. This fixing method further strengthens the fixing of the push-pull member 311 .

Example 9.

A puncture device clamping mechanism, other features are the same as in Embodiment 1, as shown in Figure 1, and also has the following features:

A positioning groove 130 is also provided on the wall of the clamping through hole 110 .

Wherein, the direction of the positioning groove 130 is the same as the axial direction of the clamping through hole 110 .

Wherein, the positioning groove 130 is disposed opposite to the locking through hole 120 .

The puncture device clamping mechanism is provided with a positioning groove 130 on the wall of the clamping through hole 110 . When the puncture device is inserted into the clamping through hole 110, the part of the puncture device will fall into the positioning groove 130, and the movement of the puncture device is restricted at this time, so the positioning groove 130 plays a positioning role for the puncture device.

Example 10.

A puncture device clamping mechanism, other features are the same as those in Embodiment 1, and also have the following features:

The surface of the push-pull member 311 is provided with anti-skid lines.

Specifically, the anti-skid lines are tooth lines or raised lines or concave lines, etc., which can increase the surface friction of the push-pull member 311 .

The push-pull part 311 of the clamping mechanism of the puncture device has anti-skid lines on the surface to increase the friction between the fingers and the push-pull part 311, and has the characteristics of anti-slip and easy push-pull.

Example 11.

A clamping mechanism for a puncture device, the other features of which are the same as in Embodiment 1, as shown in Figure 4, and also have the following features:

The tail portion 330 of the elastic locking mechanism is a cylinder with a smaller diameter than the main body 310 .

Wherein, the junction of the cylinder and the main body 310 forms a circular platform 331 .

Wherein, the spring 340 is sleeved on the outer periphery of the cylinder and abuts against the ring platform 331 .

The tail portion 330 of the elastic locking mechanism of the puncture device clamping mechanism is a cylinder and has a circular platform 331 . The cylinder is arranged inside the spring 340 to play a supporting role when the spring 340 is squeezed and contracted to prevent the spring 340 from twisting and deforming. The ring platform 331 has a positioning function for the spring 340 and prevents the spring 340 from squeezing between the main body 310 and the inner wall of the inner cavity 210 after being compressed.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should It is understood that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (9)

1. A puncture device clamping mechanism, characterized in that: a clamping part, a connecting rod fixedly assembled with the clamping part and an elastic locking mechanism are provided; The clamping part is provided with a clamping through hole and a locking through hole; the connecting rod is provided with an inner cavity, and the end of the connecting rod is fixed and communicated with the locking through hole; The elastic locking mechanism is movably assembled in the inner cavity of the connecting rod, and one end of the elastic locking mechanism can extend into or out of the clamping through hole from the locking through hole. 2. The puncture device clamping mechanism according to claim 1, characterized in that: The elastic locking mechanism is provided with a main body, an abutment portion, a tail portion and a spring; the abutment portion and the tail portion are respectively fixed on two ends of the main body, the spring is sleeved on the tail portion, and one end of the spring abuts against the main body, and the other end of the spring abut against the inner cavity of the connecting rod; The diameter of the body matches the lumen of the connecting rod. 3. The puncture device clamping mechanism according to claim 2, characterized in that: The end of the abutting portion is flat, and the thickness from the end to the main body gradually increases. 4. The puncture device clamping mechanism according to claim 3, characterized in that: The end of the abutting part is provided with a positioning notch for positioning the puncture device. 5. The puncture device clamping mechanism according to claim 4, characterized in that: The surface of the positioning notch is provided with an elastic anti-skid layer. 6. The puncture device clamping mechanism according to claim 2, characterized in that: The surface of the main body is fixed with symmetrically distributed push-pull pieces; The connecting rod is provided with a push-pull slot matching the push-pull piece; The push-pull part protrudes from the outer wall of the connecting rod through the push-pull slot; The length of the push-pull slot is greater than that of the push-pull piece, and the displacement of the push-pull piece in the push-pull slot is greater than or equal to the diameter of the clamping hole. 7. The puncture device clamping mechanism according to claim 6, characterized in that: The push-pull part is detachably fixed to the main body; The push-pull part is an integral sheet structure with a first screw hole on the surface; The main body is provided with a push-pull slot for accommodating push-pull parts and a second screw hole perpendicular to the push-pull through groove; The push-pull member is fixed to the main body through the second screw hole and the first screw hole successively by screws; the length of the push-pull is greater than the diameter of the main body; or The connecting rod is provided with a third screw hole opposite to the second screw hole; The push-pull member is fixed to the main body by screws successively passing through the third screw hole, the second screw hole and the first screw hole. 8. The puncture device clamping mechanism according to claim 1, characterized in that: The hole wall of the clamping through hole is also provided with a positioning groove; The direction of the positioning groove is the same as the axial direction of the clamping through hole; The positioning groove is arranged opposite to the locking through hole. 9. The puncture device clamping mechanism according to any one of claims 6 to 7, characterized in that: The surface of the push-pull member is provided with anti-skid lines.

Images