CN219207182U

CN219207182U - Special skin expanding device of medium length pipe of improvement formula

Info

Publication number: CN219207182U
Application number: CN202320254190.4U
Authority: CN
Inventors: 叶萍; 茆长蕾; 颜娟; 郑小云; 李越; 闻晶晶; 姜赢
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-06-20
Anticipated expiration: 2033-02-20

Abstract

An improved special skin expanding device for medium-length catheters comprises a needle body, a positioning mechanism and a handheld rod; according to the utility model, through the rotation of the rotating rod and the relative sliding of the two built-in sliding blocks, the two clamping plates are driven to move relatively, the inner ends of the needle bodies are clamped and positioned through the clamping plates, the movable convenient assembly of the needle bodies is realized, and meanwhile, the locking ring body can rotate through the threads on the penetrating rod, so that the locking ring body is rotationally abutted against the lower side of the positioning block, the positioning of the rotating rod is realized, and the stability of the whole structure is improved.

Description

Special skin expanding device of medium length pipe of improvement formula

Technical Field

The utility model relates to an improved skin expanding device special for a medium-length catheter.

Background

Patients with advanced tumor palliative treatment usually use hypertonic liquid such as mannitol, fat emulsion, amino acid, vasoactive drugs, antibiotics and the like and irritant drugs, and the PH value is 4 to 11; strong acid, strong alkali and hypertonic drugs stimulate the intima of blood vessels to easily cause phlebitis and catheter-related thrombosis; the improved medium-length catheter (modified midline catheters, MMC) has longer implantation speed than the traditional medium-length catheter, the tip of the catheter is prolonged to the cross-domain armpit level, the catheter can reach the subclavian vein or more, the blood flow of the subclavian vein is faster than that of the armpit vein, the liquid medicine can be diluted rapidly, and the damage of high osmotic pressure liquid to blood vessel intima cells is avoided; the improved medium-length catheter is safe and feasible to be applied to intravenous transfusion of patients, and a treatment operation nurse can judge the smoothness and effectiveness of the catheter through blood withdrawal and wash pipes, so that the receiving level of patients and families can be improved, the puncture pressure of nurses can be relieved, the actual nursing workload can be reduced, the infusion speed of special medicines can be ensured, the pain of the patients can be relieved, and the catheter is made of polyurethane material, is stable and soft and is not easy to cause phlebitis; however, continuous clinical practice shows that in the process of the improved medium-length catheter catheterization operation, the traditional skin-dilating knife often cannot successfully dilate skin once, skin dilating can be completed only by a plurality of times, and a catheterizer can consciously enlarge the skin dilating range, so that local skin injury is aggravated, local blood seepage is more caused, the time for wound healing is prolonged, discomfort and pain of a patient are increased, and complications such as mechanical phlebitis, catheter removal, local infection and the like can occur after the improved medium-length catheter catheterization operation; therefore, the skin expanding needle needs to be applied, the skin expanding needle is generally used by pinching the handheld rod, but when the skin expanding needle with different sizes needs to be replaced, or when the needle body is used for replacing waste gas, the convenience of disassembling and installing the needle body is poor, and the skin expanding needle is inconvenient to use.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model solves the problems that: provides an improved skin expanding device special for medium-length catheters, which is convenient to use.

In order to solve the problems, the utility model adopts the following technical scheme:

an improved special skin expanding device for medium-length catheters comprises a needle body, a positioning mechanism and a handheld rod; the inner end of the needle body is movably connected to the positioning mechanism; a handheld rod is arranged on the outer side of the positioning mechanism; the positioning mechanism comprises a clamping plate, a positioning block, a built-in sliding block and a rotating rod; the inner side of the positioning block is provided with a sliding clamping groove up and down respectively; the sliding clamping grooves are respectively and slidably clamped with a built-in sliding block; the outer sides of the built-in sliding blocks are respectively provided with a clamping plate, and the two clamping plates are distributed up and down oppositely; the rotating rod is rotationally clamped on the positioning block and is connected with the sliding clamping groove in a penetrating way; external thread ring surfaces with screw teeth arranged oppositely are respectively arranged on the periphery of the upper part and the lower part of the rotating rod, and the external thread ring surfaces of the rotating rod are respectively screwed with a built-in sliding block; the rotating rod drives the two built-in sliding blocks to move relatively in a rotating way; and a handheld rod is arranged in the middle of the outer side of the positioning block.

Further, a penetrating rod is arranged at the lower end of the rotating rod; the lower end of the penetrating rod extends out from the lower end of the positioning block; the threading rod is screwed with a locking ring body.

Further, the upper part and the lower part of the rotating rod are respectively sleeved with an abutting spring; the two ends of the abutting spring are respectively elastically abutted between the outer side of the built-in sliding block and the inner wall of the sliding clamping groove.

Further, the inner sides of the clamping plates are respectively provided with an arc-shaped gasket; the arc-shaped gasket is made of elastic rubber.

Further, the inner end of the clamping plate is provided with a limit folded plate.

Further, the clamping plate is of an arc-shaped structure.

Further, the needle body has a diameter of 1.35mm.

Further, the needle tip at the outer end of the needle body is an inclined plane of 20 degrees.

The beneficial effects of the utility model are as follows:

1. according to the utility model, through the rotation of the rotating rod and the relative sliding of the two built-in sliding blocks, the two clamping plates are driven to move relatively, the inner ends of the needle bodies are clamped and positioned through the clamping plates, the movable convenient assembly of the needle bodies is realized, and meanwhile, the locking ring body can rotate through the threads on the penetrating rod, so that the locking ring body is rotationally abutted against the lower side of the positioning block, the positioning of the rotating rod is realized, and the stability of the whole structure is improved.

2. The improved special skin expanding device for the medium-length catheter is convenient to operate, accords with the habit of holding a needle daily by a catheterizer, has the advantages of easy grasp and control of strength, fixed skin expanding depth and range, avoids the conditions of overlarge skin expanding and overlarge skin expanding, reduces local injury, reduces local bleeding, reduces discomfort and pain of patients, and improves satisfaction of the patients: the needle body skin-expanding incision is smaller than 2mm, only the skin epidermis is cut, the dermis and subcutaneous tissues are not damaged, the vascular sheath is relatively easy to push after skin expansion, the local tissue injury is lightened, the skin wound is healed quickly, the discomfort and pain of a patient are obviously relieved, and the satisfaction degree of the patient is improved.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the positioning mechanism after locking.

Fig. 3 is a schematic view of the positioning mechanism of the present utility model after being opened.

Description of the embodiments

The present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, an improved skin expanding device special for medium-length catheters comprises a needle body 1, a positioning mechanism 2 and a handheld rod 3; the inner end of the needle body 1 is movably connected to the positioning mechanism 2; a handheld rod 3 is arranged on the outer side of the positioning mechanism 2; the positioning mechanism 2 comprises a clamping plate 22, a positioning block 21, a built-in sliding block 23 and a rotating rod 24; the inner side of the positioning block 21 is provided with a sliding clamping groove 211 up and down respectively; the sliding clamping grooves 211 are respectively connected with a built-in sliding block 23 in a sliding way; the outer sides of the built-in sliding blocks 23 are respectively provided with a clamping plate 22, and the two clamping plates 22 are distributed up and down oppositely; the rotating rod 24 is rotationally clamped on the positioning block 21 and is connected with the sliding clamping groove 211 in a penetrating way; external thread ring surfaces with screw teeth arranged oppositely are respectively arranged on the periphery of the upper part and the lower part of the rotating rod 24, and the external thread ring surfaces of the rotating rod 24 are respectively screwed with a built-in sliding block 23; the rotating rod 24 drives the two built-in sliding blocks 23 to move relatively in a rotating way; the middle of the outer side of the positioning block 21 is provided with a handheld rod 3.

As shown in fig. 1 to 3, in order to ensure structural stability of the rotation rod 24 after the adjustment is completed, it is further preferable that the lower end of the rotation rod 24 is provided with a penetrating rod 26; the lower end of the penetrating rod 26 extends out from the lower end of the positioning block 21; the threaded rod 26 is screwed with a locking ring 27. In order to improve the stability of the structural adjustment, it is further preferable that the upper and lower parts of the rotating rod 24 are respectively sleeved with an abutting spring 25; the two ends of the abutting spring 25 are respectively elastically abutted between the outer side of the built-in sliding block 23 and the inner wall of the sliding clamping groove 211. To achieve the clamping tightness, further, the inner sides of the clamping plates 22 are respectively provided with an arc-shaped gasket 221; the arc-shaped pad 221 is made of elastic rubber. Further, a limit flap 222 is provided at the inner end of the clamping plate 22. Further, the clamping plate 22 has an arc-shaped structure. Further, the diameter of the needle body 1 is 1.35mm. Further, the needle tip at the outer end of the needle body 1 is an inclined plane of 20 degrees.

According to the utility model, through the rotation of the rotating rod 24 and the relative sliding of the two built-in sliding blocks 23, the two clamping plates 22 are driven to move relatively, the inner end of the needle body 1 is clamped and positioned through the clamping plates 22, the movable convenient assembly of the needle body 1 is realized, meanwhile, the locking ring body 27 can rotate on the penetrating rod 26 through the threads, so that the locking ring body 27 is rotationally pressed against the lower side of the positioning block 21, the positioning of the rotating rod is realized, and the stability of the whole structure is improved.

The improved special skin expanding device for the medium-length catheter is convenient to operate, accords with the habit of holding a needle daily by a catheterizer, has the advantages of easy grasp and control of strength, fixed skin expanding depth and range, avoids the conditions of overlarge skin expanding and overlarge skin expanding, reduces local injury, reduces local bleeding, reduces discomfort and pain of patients, and improves satisfaction of the patients: the needle body skin-expanding incision is smaller than 2mm, only the skin epidermis is cut, the dermis and subcutaneous tissues are not damaged, the vascular sheath is relatively easy to push after skin expansion, the local tissue injury is lightened, the skin wound is healed quickly, the discomfort and pain of a patient are obviously relieved, and the satisfaction degree of the patient is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. An improved skin expanding device special for medium-length catheters is characterized by comprising a needle body, a positioning mechanism and a handheld rod; the inner end of the needle body is movably connected to the positioning mechanism; a handheld rod is arranged on the outer side of the positioning mechanism; the positioning mechanism comprises a clamping plate, a positioning block, a built-in sliding block and a rotating rod; the inner side of the positioning block is provided with a sliding clamping groove up and down respectively; the sliding clamping grooves are respectively and slidably clamped with a built-in sliding block; the outer sides of the built-in sliding blocks are respectively provided with a clamping plate, and the two clamping plates are distributed up and down oppositely; the rotating rod is rotationally clamped on the positioning block and is connected with the sliding clamping groove in a penetrating way; external thread ring surfaces with screw teeth arranged oppositely are respectively arranged on the periphery of the upper part and the lower part of the rotating rod, and the external thread ring surfaces of the rotating rod are respectively screwed with a built-in sliding block; the rotating rod drives the two built-in sliding blocks to move relatively in a rotating way; and a handheld rod is arranged in the middle of the outer side of the positioning block.

2. The improved medium-length catheter-specific skin-expanding device according to claim 1, wherein the lower end of the rotating rod is provided with a penetrating rod; the lower end of the penetrating rod extends out from the lower end of the positioning block; the threading rod is screwed with a locking ring body.

3. The improved medium-length catheter-specific skin expanding device according to claim 1, wherein the upper and lower parts of the rotating rod are respectively sleeved with an abutting spring; the two ends of the abutting spring are respectively elastically abutted between the outer side of the built-in sliding block and the inner wall of the sliding clamping groove.

4. The improved medium-length catheter special skin expanding device according to claim 1, wherein the inner sides of the clamping plates are respectively provided with an arc-shaped gasket; the arc-shaped gasket is made of elastic rubber.

5. The improved medium length catheter specific skin spreading device according to claim 1, wherein the inner end of the clamping plate is provided with a limit flap.

6. The improved medium length catheter specific skin expanding device of claim 1, wherein the clamping plate is of an arcuate configuration.

7. The improved medium length catheter specific sheath device of claim 1, wherein the needle diameter is 1.35mm.

8. The improved medium length catheter specific skin expanding device according to claim 1, wherein the needle tip at the outer end of the needle body is a 20 degree bevel.