Auxiliary positioning device based on central venous catheter implantation

Abstract

The utility model discloses an auxiliary positioning device based on central venous catheter implantation, which comprises a central venous catheter and an auxiliary positioner arranged on the central venous catheter, and the auxiliary positioner comprises a catheter fixing lock and an anti-dropping safety lock; the catheter fixing lock comprises a catheter clamping device clamped on a central venous catheter, a fixing lock cover plate is clamped on the catheter clamping device, the catheter clamping device and the fixing lock cover plate are fixed on the surface of skin around a catheter implanting position through a suture fixing method, a connecting groove is formed in the fixing lock cover plate, and the fixing lock cover plate is connected with the catheter clamping device. And a rotary connecting plate is clamped on the inner side of the connecting groove. According to the utility model, the trigger block structure is automatically controlled to work under the condition that the liquid medicine tube of the central venous catheter is overlarge in tensile force, so that the closing of the central venous catheter and the installation stability of the central venous catheter and the auxiliary positioner are completed, and the auxiliary use safety and reliability of the auxiliary positioner to the central venous catheter are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically to an auxiliary positioning device based on central venous catheter implantation. Background Art

[0002] A central venous catheter (CVC) is a tube inserted into the central vein of the human body for the infusion of drugs, nutrition and fluids, or for monitoring central venous pressure, etc. It is usually inserted into the neck, subclavian vein or femoral vein, and transported to the central vein near the heart through a catheter. The insertion of a central venous catheter usually requires a doctor, and the specific operation method includes puncturing the skin and blood vessels, inserting the catheter into the vein, and then using X-rays or ultrasound to ensure that the catheter is correctly placed.

[0003] After the central venous catheter is implanted, it is necessary to ensure the central venous catheter's anti-dropout and stabilization effects, so as to ensure the effectiveness and safety of the central venous catheter and avoid causing excessive damage to the patient. The current central venous catheter positioning and fixing device simply uses a catheter fixing lock in combination with a suture fixation method for fixation. When the central venous catheter is subjected to excessive pulling force caused by external factors, the simple catheter fixing lock cannot guarantee the stability of the central venous catheter. In addition, due to the use of suture fixation, the patient's skin will be damaged and painful after the central venous catheter falls off, which seriously affects the safety of the central venous catheter. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an auxiliary positioning device based on central venous catheter implantation, to improve the safety and reliability of the auxiliary locator for the auxiliary use of the central venous catheter, to reduce surgical risks and improve the success rate of surgery.

[0005] To achieve the above purpose, the utility model adopts the following technical solution.

[0006] An auxiliary positioning device based on central venous catheter implantation, comprising a central venous catheter and an auxiliary positioning device installed on the central venous catheter, wherein the auxiliary positioning device comprises a catheter fixing lock and an anti-drop safety lock;

[0007] The catheter fixing lock comprises a catheter connector clamped on the central venous catheter, a fixing lock cover plate clamped on the catheter connector, the catheter connector and the fixing lock cover plate are fixed to the skin surface around the catheter implantation position by suture fixing method, a connecting groove is provided on the fixing lock cover plate, a rotating connecting plate is clamped on the inner side of the connecting groove, and the other end of the rotating connecting plate is fixedly connected to the anti-drop safety lock;

[0008] The anti-slip safety lock includes a shell, which is fixed to the skin surface around the catheter implantation position by a medical transparent tape, and the left and right sides of the shell are integrally formed with closing clamps, and a trigger block slidably connected to the shell is inserted on the shell, and a compression spring is fixedly installed inside the shell, and the other end of the compression spring is fixedly connected to the trigger block located inside the shell, and the trigger block is located inside the shell and contacts the closing clamp, and the central venous catheter is clamped on the inner side of the shell.

[0009] As a further description of the above technical solution:

[0010] The central venous catheter comprises a catheter main pipe and a drug solution pipe plugged into the catheter main pipe, and the part of the trigger block located outside the shell is fixedly connected to the connecting end of the drug solution pipe.

[0011] As a further description of the above technical solution:

[0012] The trigger block includes a pushing block slidably installed inside the shell, one side of the pushing block is in contact with the closing clamp, and the other side of the pushing block is integrally formed with a connecting rod inserted into the shell, and a fixing plate is integrally formed between the ends of the two connecting rods located outside the shell, and a fixing buckle is integrally formed on the fixing plate, and the connecting end of the medicine tube is fixed by clamping the fixing plate and the fixing buckle.

[0013] As a further description of the above technical solution:

[0014] The rotating connecting plate is integrally formed with evenly distributed clamping blocks, the clamping blocks are located at the inner side of the connecting groove, and the rotating connecting plate is connected to the fixed lock cover plate through the clamping blocks and the inner wall of the connecting groove.

[0015] As a further description of the above technical solution:

[0016] The number of the medicine liquid tubes is greater than or equal to one, and the medicine liquid tube is one of an infusion tube and an injection tube.

[0017] As a further description of the above technical solution:

[0018] A groove is provided on one side of the fixing plate opposite to the fixing buckle, and the number of the grooves is the same as the number of the medicine liquid tubes.

[0019] As a further description of the above technical solution:

[0020] The shell body is composed of a card tube shell and a cover plate, and the cover plate is card-connected to the card tube shell.

[0021] As a further description of the above technical solution:

[0022] The connecting rod is provided with a notch, which constitutes a breakable part of the connecting rod.

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] (1) In this scheme, according to the implantation position of the central venous catheter and the need for using the central venous catheter, the anti-dropout safety lock is rotated with the catheter fixing lock as the center, thereby changing the position of the central venous catheter tip to facilitate infusion and injection. At the same time, the central venous catheter reserved between the catheter fixing lock and the anti-dropout safety lock forms a curve, so that when the central venous catheter tip is pulled, only the anti-dropout safety lock is subjected to tension, while ensuring that the catheter fixing lock is not affected or not greatly affected.

[0025] (2) In this solution, when the tension on the drug tube of the central venous catheter is too great, the trigger block structure is automatically controlled to work, thereby completing the closure of the central venous catheter and the installation stability of the central venous catheter and the auxiliary positioner, thereby improving the safety and reliability of the auxiliary positioner in assisting the central venous catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the cross-sectional connection structure of the central venous catheter and the auxiliary positioner of the utility model;

[0028] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0029] Figure 4 It is a schematic diagram of the connection structure between the rotating connecting plate and the clamping block of the utility model.

[0030] Description of the numbers in the figure:

[0031] 1. Central venous catheter; 11. Catheter main pipe; 12. Drug solution pipe; 2. Auxiliary positioner; 21. Catheter fixing lock; 211. Catheter connector; 212. Fixed lock cover plate; 213. Connecting groove; 214. Rotating connecting plate; 2141. Block; 22. Anti-slip safety lock; 221. Shell; 2211. Tube shell; 2212. Cover plate; 222. Closing clamp; 223. Trigger block; 2231. Pushing block; 2232. Connecting rod; 2233. Fixing plate; 2234. Fixing buckle; 2235. Groove; 224. Compression spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] See also Figure 1-4 , the utility model provides embodiment 1:

[0034] The auxiliary positioning device based on central venous catheter implantation comprises a central venous catheter 1 and an auxiliary positioning device 2 installed on the central venous catheter 1 , wherein the auxiliary positioning device 2 comprises a catheter fixing lock 21 and an anti-drop safety lock 22 .

[0035] The catheter fixing lock 21 includes a catheter connector 211 that is clamped on the central venous catheter 1, and a fixing lock cover plate 212 is clamped on the catheter connector 211. The catheter connector 211 and the fixing lock cover plate 212 are fixed to the skin surface around the catheter implantation position by suture fixing. A connecting groove 213 is opened on the fixing lock cover plate 212, and a rotating connecting plate 214 is clamped on the inner side of the connecting groove 213. The other end of the rotating connecting plate 214 is fixedly connected to the anti-detachment safety lock 22.

[0036] The auxiliary positioner 2 for positioning and fixing the central venous catheter 1 is divided into two parts: a catheter fixing lock 21 and an anti-slip safety lock 22, and the two parts are connected by a rotating connecting plate 214 as a connecting piece. After the auxiliary positioner 2 is fixed on the central venous catheter 1, the anti-slip safety lock 22 is rotated around the catheter fixing lock 21 as the center according to the implantation position of the central venous catheter 1 and the demand for using the central venous catheter 1, thereby changing the terminal position of the central venous catheter 1 to facilitate infusion and injection, and at the same time, the central venous catheter 1 reserved between the catheter fixing lock 21 and the anti-slip safety lock 22 forms a curve, so that when the terminal part of the central venous catheter 1 is pulled, only the anti-slip safety lock 22 is subjected to tension, while ensuring that the catheter fixing lock 21 is not affected or is not greatly affected.

[0037] The catheter connector 211 is fixed to the central venous catheter 1 by a clamping method, and the fixing position can be adjusted according to the length of the inserted vein of the central venous catheter 1. The catheter connector 211 and the fixed locking cover plate 212 use suture fixation to improve the fixation stability of the central venous catheter 1 that is indwelled for a long time.

[0038] The rotating connecting plate 214 is integrally formed with evenly distributed clamping blocks 2141 , which are located inside the connecting groove 213 , and the rotating connecting plate 214 is connected to the fixed lock cover plate 212 via the clamping blocks 2141 clamping with the inner wall of the connecting groove 213 .

[0039] By means of the clamping structure of the clamping block 2141 and the inner wall of the connecting groove 213, which serves as the connecting structure between the rotating connecting plate 214 and the fixed lock cover plate 212, after the anti-detachment safety lock 22 falls off, the rotating connecting plate 214 can be forced to detach from the fixed lock cover plate 212, thereby reducing the impact of the anti-detachment safety lock 22 falling off on the catheter fixed lock 21, and at the same time facilitating the replacement of the anti-detachment safety lock 22 after the anti-detachment safety lock 22 is damaged.

[0040] See also Figure 1-3Based on Example 1, the present invention further provides Example 2:

[0041] The anti-drop safety lock 22 includes a shell 221, which is fixed to the skin surface around the catheter implantation position by a medical transparent tape. Closure clips 222 are integrally formed on the left and right sides of the shell 221. A trigger block 223 slidably connected to the shell 221 is inserted on the upper part of the shell 221. A compression spring 224 is fixedly installed inside the shell 221, and the other end of the compression spring 224 is fixedly connected to the trigger block 223 located in the inner part of the shell 221. The trigger block 223 is located in the inner part of the shell 221 and contacts the closure clip 222, and the central venous catheter 1 is clamped on the inner side of the shell 221.

[0042] The central venous catheter 1 includes a catheter main tube 11 and a drug solution tube 12 plugged into the catheter main tube 11 . The portion of the trigger block 223 located outside the housing 221 is fixedly connected to the connecting end of the drug solution tube 12 .

[0043] Since the central venous catheter 1 is divided into two parts, namely, the drug solution tube 12 on the catheter main tube 11 , the drug solution tube 12 is the end that is pulled during actual use. When the drug solution tube 12 is subjected to tension, two situations may occur.

[0044] First, it will drive the end of the entire drug liquid tube 12 to separate from the catheter main tube 11, so that the trigger block 223 loses the restriction of the drug liquid tube 12, and the elastic force of the compression spring 224 drives the entire trigger block 223 to be recovered into the interior of the shell 221, and squeezes the two closing clamps 222, so that the two closing clamps 222 are close to each other to clamp the central venous catheter 1 located between the two closing clamps 222, and complete the closing work of the catheter main tube 11, thereby preventing venous blood from flowing out through the connection port between the catheter main tube 11 and the drug liquid tube 12, and ensuring the safety of the central venous catheter 1.

[0045] 2. The pulling force is too large, but the connection between the drug tube 12 and the catheter main tube 11 is firm, resulting in the pulling force being transmitted to the anti-slip safety lock 22 as a whole. When the pulling force reaches a certain level, the trigger block 223 breaks, and the parts of the trigger block 223 located inside and outside the shell 221 are separated, while the part located inside the shell 221 is subjected to the elastic force of the compression spring 224 to squeeze the two closing clamps 222, so that the two closing clamps 222 are close to each other to clamp the central venous catheter 1 located between the two closing clamps 222, and complete the closing work of the catheter main tube 11, thereby preventing venous blood from flowing out through the connection port between the catheter main tube 11 and the drug tube 12. At the same time, due to the breaking of the trigger block 223, the drug tube 12 loses the fixing effect of the trigger block 223, and the fixing stability is reduced and can be separated from the catheter main tube 11, thereby making the anti-slip safety lock 22 lose the pulling force traction, and protecting the structure of the anti-slip safety lock 22 and the position stability of the catheter main tube 11.

[0046] The trigger block 223 includes a pushing block 2231 slidably installed inside the shell 221, one side of the pushing block 2231 contacts the closing clamp 222, and the other side of the pushing block 2231 is integrally formed with a connecting rod 2232 inserted into the shell 221, and a fixing plate 2233 is integrally formed between the ends of the two connecting rods 2232 located outside the shell 221, and a fixing buckle 2234 is integrally formed on the fixing plate 2233, and the connecting end of the medicine tube 12 is fixed by clamping the fixing plate 2233 and the fixing buckle 2234.

[0047] The connection clamping and fixing of the medicine liquid tube 12 by the fixing plate 2233 and the fixing buckle 2234 can assist the connection stability of the medicine liquid tube 12 and the catheter main tube 11 to a certain extent, and the movement of the medicine liquid tube 12 is transmitted to the pushing block 2231 through the connecting rod 2232, so that the pushing pressure of the pushing block 2231 on the closing clamp 222 is determined according to the tension exerted on the catheter main tube 11.

[0048] Among them, the number of the medicine liquid tubes 12 is greater than or equal to one, and the medicine liquid tube 12 is one of an infusion tube and an injection tube; a groove 2235 is opened on the side opposite to the fixing plate 2233 and the fixing buckle 2234, and the number of the grooves 2235 is the same as the number of the medicine liquid tubes 12.

[0049] In the present invention, the housing 221 is composed of a tube-card shell 2211 and a cover plate 2212 , and the cover plate 2212 is clamped on the tube-card shell 2211 .

[0050] The detachable structure of the tube shell 2211 and the cover plate 2212 facilitates opening the interior of the drug solution tube 12 , and can facilitate resetting and replacing the components inside the shell 221 when restoring the central venous catheter 1 to its original state.

[0051] In the present invention, a notch is provided on the connecting rod 2232 to constitute a breakable portion of the connecting rod 2232 .

[0052] Through the provided notch, when the connecting rod 2232 is subjected to excessive tension, the connecting rod 2232 itself can be easily broken, thereby abandoning the connecting rod 2232 part to protect the entire anti-drop safety lock 22.

[0053] The above is a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical solution and its improved conception of the utility model, which should be included in the protection scope of the utility model.

Claims

1. An auxiliary positioning device based on central venous catheter implantation, comprising a central venous catheter (1) and an auxiliary positioning device (2) installed on the central venous catheter (1), characterized in that: The auxiliary positioner (2) comprises a catheter fixing lock (21) and an anti-drop safety lock (22); The catheter fixing lock (21) comprises a catheter connector (211) that is clamped onto the central venous catheter (1); a fixing lock cover plate (212) is clamped onto the catheter connector (211); the catheter connector (211) and the fixing lock cover plate (212) are fixed to the skin surface around the catheter implantation position by means of suture fixing; a connecting groove (213) is provided on the fixing lock cover plate (212); a rotating connecting plate (214) is clamped onto the inner side of the connecting groove (213); the other end of the rotating connecting plate (214) is fixedly connected to the anti-drop safety lock (22); The anti-drop safety lock (22) comprises a shell (221), the shell (221) is fixed to the skin surface around the catheter implantation position by medical transparent adhesive tape, the left and right sides of the shell (221) are integrally formed with closing clamps (222), the upper part of the shell (221) is inserted with a trigger block (223) slidably connected thereto, the inside of the shell (221) is fixedly installed with a compression spring (224), and the other end of the compression spring (224) is fixedly connected to the trigger block (223) located in the inner part of the shell (221), the trigger block (223) is located in the inner part of the shell (221) and contacts the closing clamp (222), and the central venous catheter (1) is clamped to the inner side of the shell (221).

2. The auxiliary positioning device based on central venous catheter implantation according to claim 1, characterized in that: The central venous catheter (1) comprises a catheter main tube (11) and a drug solution tube (12) plugged into the catheter main tube (11), and the part of the trigger block (223) located outside the housing (221) is fixedly connected to the connecting end of the drug solution tube (12).

3. The auxiliary positioning device based on central venous catheter implantation according to claim 2, characterized in that: The trigger block (223) comprises a pushing block (2231) slidably mounted inside the shell (221); one side of the pushing block (2231) contacts the closing clamp (222); the other side of the pushing block (2231) is integrally formed with a connecting rod (2232) inserted into the shell (221); a fixing plate (2233) is integrally formed between the ends of the two connecting rods (2232) located outside the shell (221); a fixing buckle (2234) is integrally formed on the fixing plate (2233); and the connecting end of the medicine liquid tube (12) is fixed by clamping the fixing plate (2233) and the fixing buckle (2234).

4. The auxiliary positioning device based on central venous catheter implantation according to claim 1, characterized in that: The rotating connecting plate (214) is integrally formed with evenly distributed clamping blocks (2141), the clamping blocks (2141) are located on the inner side of the connecting groove (213), and the rotating connecting plate (214) is connected to the fixed lock cover plate (212) by clamping the clamping blocks (2141) with the inner wall of the connecting groove (213).

5. The auxiliary positioning device based on central venous catheter implantation according to claim 2, characterized in that: The number of the drug liquid tubes (12) is greater than or equal to one, and the drug liquid tube (12) is one of an infusion tube and an injection tube.

6. The auxiliary positioning device based on central venous catheter implantation according to claim 3, characterized in that: A groove (2235) is provided on one side of the fixing plate (2233) opposite to the fixing buckle (2234), and the number of the grooves (2235) is the same as the number of the liquid medicine tubes (12).

7. The auxiliary positioning device based on central venous catheter implantation according to claim 1, characterized in that: The housing (221) is composed of a card tube shell (2211) and a cover plate (2212), and the cover plate (2212) is card-connected to the card tube shell (2211).

8. The auxiliary positioning device based on central venous catheter implantation according to claim 3, characterized in that: The connecting rod (2232) is provided with a notch, forming a breakable portion of the connecting rod (2232).

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