CN209269826U - A subcutaneous puncture guide bracket - Google Patents

Abstract

The utility model discloses a kind of subcutaneous puncture guide brackets, including seat ring, positioning device and fixed feet；Seat ring is circular ring shape；Positioning device includes guide part, upper clip, lower clamping piece and central tube, and guide part is arc-shaped flaky body, and the end of guide part is hinged with seat ring, and guide part is equipped with guide groove；The upside of guide part is arranged in upper clip, and the downside of guide part is arranged in lower clamping piece, and resistance cyclone is equipped between upper clip and lower clamping piece；Central tube is the hollow tube of metal, including limiting section and threaded portion, and one end of threaded portion is arranged in limiting section, and is located above upper clip, and upper clip, guide groove and lower clamping piece are run through in threaded portion, and are threadedly coupled with lower clamping piece；Fixed feet setting extends radially outwardly on seat ring, and along seat ring.The utility model has the advantage of path can be explicitly indicated before puncture, greatly improve puncture success rate using artifact of the metal under CT or DSA scanning come localised puncture entry point and puncture path.

Description

A subcutaneous puncture guide bracket

technical field

The utility model belongs to the technical field of medical supplies, in particular to a subcutaneous puncture guiding bracket.

Background technique

Malignant tumors are diseases that seriously threaten human health and life. In recent years, the incidence rate has gradually increased, and the age of onset has declined. Early detection, correct diagnosis, and timely treatment have an important impact on prognosis. With the continuous improvement of inspection methods and methods , the correct rate of diagnosis is also gradually increasing, the correct diagnosis requires the combination of clinical, imaging and pathology, of which pathology is particularly important.

The premise of pathological diagnosis is the sampling of lesion tissue. CT-guided or DSA-guided percutaneous biopsy of tumor tissue is the most commonly used method. Existing subcutaneous puncture is generally guided by CT or DSA, using a ruler to measure the distance between the puncture point and physical landmarks. After epidermal anesthesia, the needle is used as the path and direction of the puncture needle. When measuring the ruler, there is a certain error with the change of body position or breathing. At the same time, after the epidermal anesthesia, the needle is used as the puncture guide and the direction of the puncture needle is often adjusted. This is because after the CT scan determines the puncture point and direction of the needle, the needle must be pulled out, and then in the original position. The puncture point of the needle penetrates the biopsy needle, and the direction and angle of the needle insertion are difficult to repeat accurately, which easily leads to multiple punctures, or even puncture failure, which in turn leads to complications.

Utility model content

The technical problem to be solved by the utility model is that in the existing subcutaneous puncture method, there is an error when the scalp needle guides the puncture path after the epidermis is anesthetized, resulting in inaccurate puncture.

The utility model adopts the following technical solutions to solve the above-mentioned technical problems:

A subcutaneous puncture guide bracket, including a seat ring, a positioning device and a fixed foot; the positioning device includes a guide, an upper clip, a lower clip and a center tube, the guide is an arc-shaped sheet, and the guide The end of the seat is hinged with the seat ring, and a guide groove is provided on the guide piece; the upper clip is arranged on the upper side of the guide groove, and the lower clip is arranged on the lower side of the guide groove, and the upper clip and the lower clip pass through The anti-rotation device is connected, and the distance between the upper clip and the lower clip is adjustable; the central tube is a metal hollow tube, including a limiting part and a threaded part, and the limiting part is arranged at one end of the threaded part. And located above the upper clip, the threaded part runs through the upper clip, the guide groove and the lower clip, and is threadedly connected with the upper clip and the lower clip; the fixed feet are arranged on the seat ring, and along the radial direction of the seat ring Extend outward.

Preferably, in the subcutaneous puncture guide bracket described in the present invention, the guide groove extends from one end of the guide member to the other end.

Preferably, in the subcutaneous puncture guide bracket described in the present utility model, there are two guide members, and the two guide members are stacked, and the connecting line at the end of one guide member is connected to the end of the other guide member. The lines are perpendicular to each other, the two guide grooves intersect and overlap to form a mounting hole, and the threaded part runs through the upper clip, the mounting hole and the lower clip.

Preferably, in the subcutaneous puncture guiding bracket described in the present invention, the anti-rotation device includes two first anti-rotation pieces and two second anti-rotation pieces, the upper ends of the first anti-rotation pieces are fixed On the lower end surface of the upper clip, the lower end passes through the guide groove and the lower clip, and is slidably connected with the lower clip; the lower end of the second anti-rotation piece is fixed on the upper end surface of the lower clip, and the upper end passes through the guide The groove is connected with the upper clamping piece and is slidably connected with the upper clamping piece, and the included angle between the first anti-rotation piece and the second anti-rotation piece is 90°.

Preferably, in the guide bracket for subcutaneous puncture described in the present invention, four hinged seats are evenly distributed on the seat ring, and the ends of the guides are connected to the hinged seats through pin shafts.

Preferably, in the subcutaneous puncture guiding bracket described in the present invention, the seat ring is circular and includes an inner seat ring and an outer seat ring arranged coaxially, and the inner seat ring and the outer seat ring are connected by chip connection.

Preferably, in the subcutaneous puncture guide bracket described in the present invention, there are four connecting pieces, and the angle between two adjacent connecting pieces is 90°.

Preferably, in the subcutaneous puncture guide bracket described in the present invention, the hinged seat includes two hinged ears disposed opposite to each other, one hinged ear is set on the outer race, and the other hinged ear is set on the connecting piece.

Preferably, in the subcutaneous puncture guide bracket described in the present invention, a friction block is provided on the outer wall of the limiting part.

Beneficial effects of the utility model technology:

The technical scheme of the utility model utilizes metal artifacts under CT or DSA scanning to locate the puncture point and puncture path, and the path can be clearly indicated before puncture, avoiding puncture to important tissues such as nerves and blood vessels; Success rate; reduce damage to normal tissue, significantly reduce complications caused by multiple punctures.

Description of drawings

Fig. 1 is a schematic structural view of a subcutaneous puncture guide bracket described in an embodiment of the present invention;

Fig. 2 is a front view of a subcutaneous puncture guide bracket described in an embodiment of the present invention;

Fig. 3 is a top view of a subcutaneous puncture guide bracket described in an embodiment of the present invention;

Fig. 4 is a schematic structural view of the central tube described in the embodiment of the present invention.

Detailed ways

In order to make it easier for those skilled in the art to understand the technical solution of the utility model, the technical solution of the utility model is further described in conjunction with the accompanying drawings.

Referring to FIGS. 1-4 , a subcutaneous puncture guide bracket described in this embodiment includes a seat ring 1 , a positioning device 2 and a fixed foot 3 .

The seat ring 1 is circular; the positioning device 2 includes a guide piece 21, an upper clip 22, a lower clip 23 and a central tube 24, the guide piece 21 is an arc-shaped sheet body, and the guide piece 21 The end is hinged with the seat ring 1, and the guide 21 can rotate around the hinge point. The guide 21 is provided with a guide groove 211; the upper clip 22 is arranged on the upper side of the guide groove 211, and the lower clip 23 is arranged on the On the lower side of the guide groove 211, an anti-rotation device 25 is provided between the upper clamping piece 22 and the lower clamping piece 23; the central tube 24 is a metal hollow tube body, including a limiting portion 241 and a threaded portion 242, the limiting portion 241 and a threaded portion 242. The bit part 241 is located above the upper clip 22, the threaded part 242 runs through the upper clip 22, the guide groove 211 and the lower clip 23, and is threadedly connected with the lower clip 23; the fixed foot 3 is arranged on the seat ring 1, And extend radially outward along the seat ring 1 .

The guide slot 211 extends from one end to the other end of the guide member 21 , and the central tube 24 can slide along the guide slot 211 .

When this embodiment is in use, the fixed feet 3 are pasted on the skin by adhesive tape. Here, there are three fixed feet 3, which are evenly distributed on the seat ring 1. The central tube 24 slides along the guide groove 211, and the guide 21 is rotated. Determine the direction of the central tube 24, after positioning, rotate the central tube 24, under the effect of the anti-rotation device 25, the lower clip 23 does not rotate with the central tube 24, but moves upwards, so that the distance between it and the upper clip 22 decreases. Small, until the guide 21 is clamped so that the central tube 24 cannot move.

As a further improvement, there are two guides 21 in this embodiment, and the two guides 21 are stacked, and the end line of one guide 21 is perpendicular to the end line of the other guide 21, and the two guides The slots 211 intersect and overlap to form a mounting hole, and the threaded portion 242 passes through the upper clamping piece 22 , the mounting hole and the lower clamping piece 23 .

The setting purpose of the anti-rotation device 25 is to prevent the lower clip 23 from rotating together with the central tube 24 when the central tube 24 is rotated. One method adopted in this embodiment is: two first anti-rotation pieces 251 and two second anti-rotation pieces 251 are provided. Two anti-rotation pieces 252, the upper end of the first anti-rotation piece 251 is fixed on the lower end surface of the upper clip 22, the lower end passes through the guide groove 211 and the lower clip 23, and is slidably connected with the lower clip 23; The lower end of the second anti-rotation piece 252 is fixed on the upper surface of the lower clip 23, the upper end passes through the guide groove 211 and the upper clip 22, and is slidably connected with the upper clip 22, and the two first anti-rotation pieces 251 are opposite. It is provided that the two second anti-rotation pieces 252 are arranged opposite to each other, and the included angle between the first anti-rotation piece 251 and the second anti-rotation piece 252 is 90°.

When the central tube 24 rotates, due to the blocking effect of the first anti-rotation piece 251 and the second anti-rotation piece 252, the lower clip 23 does not rotate 24 with the central tube, but moves up and down along the central tube 24, and the central tube needs to be fixed. When the position is 24, rotate the central tube 24 to move the lower clamping piece 23 up and clamp the guide 21. When the central tube 24 needs to be moved, the central tube 24 can be rotated in the opposite direction.

The race 1 includes an inner race 11 and an outer race 12 arranged coaxially, the inner race 11 and the outer race 12 are connected by four connecting pieces 13, and the angle between two adjacent connecting pieces is 90°. Four hinged seats 14 are evenly distributed on the seat ring 1, and each hinged seat 14 all includes two hinged ears arranged oppositely, wherein one hinged ear is arranged on the outer race 12, and the other hinged ear is arranged on the connecting piece 13, the end of the guide 21 is connected to the hinge seat 14 through a pin, and the guide 21 rotates around the axis of the corresponding pin.

In order to facilitate the rotation of the central tube 24 , a friction block 243 is provided on the outer wall of the limiting portion 241 .

The usage method of a subcutaneous puncture guiding bracket described in this embodiment is as follows:

(1) CT or DSA scans show the lesion level and determine the skin puncture point;

(2) Place the subcutaneous puncture guide bracket on the skin puncture point, with the central tube 24 roughly pointing to the direction of the lesion, and fixing it with adhesive tape;

(3) scan the lesion level, the metal artifact of the central tube 24 shows the current puncture path;

(4) After adjusting the direction of the central tube 24, scan again so that the artifact is aligned with the lesion and fix the central tube 24. At this time, the artifact displayed by the central tube 24 is the accurate puncture path;

(5) Measure the puncture depth, and insert the biopsy needle into the skin along the central tube 24 for puncture.

The technical solution of the utility model has exemplarily described the utility model above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as various non- Substantial improvements, or direct application of the ideas and technical solutions of the utility model to other occasions without improvement are all within the protection scope of the utility model.

Claims (9)

1. A subcutaneous puncture guide bracket, characterized in that it includes a seat ring, a positioning device and a fixed foot; the positioning device includes a guide, an upper clip, a lower clip and a central tube, and the guide is arc-shaped Sheet-shaped body, the end of the guide is hinged with the seat ring, and the guide is provided with a guide groove; the upper clip is arranged on the upper side of the guide groove, the lower clip is arranged on the lower side of the guide groove, and the upper clip The clip and the lower clip are connected by an anti-rotation device, and the distance between the upper clip and the lower clip is adjustable; the central tube is a metal hollow tube, including a limiting part and a threaded part, and the limiting part is set At one end of the threaded part and located above the upper clip, the threaded part runs through the upper clip, the guide groove and the lower clip, and is threadedly connected with the upper clip and the lower clip; the fixed foot is arranged on the seat ring, and extend radially outward along the raceway. 2 . The subcutaneous puncture guide bracket according to claim 1 , wherein the guide groove extends from one end of the guide member to the other end. 3 . 3. A subcutaneous puncture guide bracket according to claim 1 or 2, characterized in that there are two guide members, the two guide members are stacked, and the end of one guide member is connected with the other. The connecting lines of the ends of the guide pieces are perpendicular to each other, the two guide grooves intersect and overlap to form a mounting hole, and the threaded part runs through the upper clamping piece, the mounting hole and the lower clamping piece. 4. A subcutaneous puncture guide bracket according to claim 3, wherein the anti-rotation device comprises two first anti-rotation pieces and two second anti-rotation pieces, and the first anti-rotation pieces The upper end of the upper clip is fixed on the lower end surface of the upper clip, the lower end passes through the guide groove and the lower clip, and is slidably connected with the lower clip; the lower end of the second anti-rotation piece is fixed on the upper end of the lower clip, The upper end passes through the guide groove and the upper clamping piece, and is slidably connected with the upper clamping piece. The included angle between the first anti-rotation piece and the second anti-rotation piece is 90°. 5 . The subcutaneous puncture guide bracket according to claim 3 , wherein four hinged seats are evenly distributed on the seat ring, and the ends of the guide are connected to the hinged seats through pin shafts. 6 . 6. A subcutaneous puncture guiding bracket according to claim 5, characterized in that, the race is circular and includes an inner race and an outer race arranged coaxially, the inner race and the outer race The seat rings are connected by connecting pieces. 7. The subcutaneous puncture guide bracket according to claim 6, wherein there are four connecting pieces, and the angle between two adjacent connecting pieces is 90°. 8. A subcutaneous puncture guide bracket according to claim 7, characterized in that, the hinged seat includes two hinged ears oppositely arranged, wherein one hinged ear is arranged on the outer race, and the other hinged ear is arranged on the connected on-chip. 9 . The subcutaneous puncture guide bracket according to claim 1 , wherein a friction block is provided on the outer wall of the limiting part. 10 .