Peel expanding device adopting blunt separation method
By designing a blunt separation method skin expansion device, the removable connection and guidewire channel of the blunt separation handle, thick flaring needle and thin flaring needle are solved, and the failure and curling problems of the blunt separation method in the PICC tube placement process is improved, and the success rate and safety are achieved, and minimally invasive skin expansion is achieved.
Patent Information
- Application Number
- CN202420877730.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The existing blunt separation method has problems such as blunt separation failure and blunt outer sheath crimping of micro-cannula sheath during the PICC catheterization process, which affects the success rate and safety.
A blunt separation method skin expansion device is designed, including a blunt separation handle, a thick flaring needle and a thin flaring needle. Through the removable connection of these components and the guide wire channel, skin expansion is achieved using skin elasticity to avoid secondary cutting of the puncture port.
The device can improve the success rate and safety of the blunt separation method, avoid excessive expansion and local damage, achieve true minimally invasive skin expansion, and reduce the risk of bleeding.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of minimally invasive surgery, and in particular relates to a blunt separation method skin expansion device. Background Art
[0002] With the widespread application of minimally invasive technology concepts in various fields in recent years, PICC catheterization under ultrasound guidance combined with MST technology is also actively seeking a more minimally invasive and safe method of skin expansion.
[0003] Wang Yang, Song Hui, Sun Yingjie, et al. Study on the prevention of puncture site bleeding after PICC catheterization by intrathecal expansion under ultrasound guidance[J]. Chinese Journal of Practical Nursing, 2016, 32(12): 934-936.
[0004] Xu Chunyi, Tang Fang, Wu Yufen, et al. Comparison of the application effects of blunt separation method and modified skin expansion method in PICC catheterization[J]. Sichuan Medicine, 2020, 41(08): 874-876.
[0005] Qian Juyun, Fang Changtai, Wu Lixin, et al. Application of improved blunt separation technique in PICC placement in patients with thrombocytopenia[J]. Journal of Bengbu Medical College, 2020, 45(06): 836-839.
[0006] In the corresponding article, the above scholars used blunt separation method to expand the skin. This method does not use a skin expansion knife, but uses skin elasticity to expand the skin. Among them, the blunt separation method using the outer sheath of the traditional blind needle (No. 14 trocar) and the inner sheath of the microcannula sheath to expand the skin and using the microcannula sheath to directly expand the puncture point has been widely used. However, the above technology also has problems such as blunt separation failure and curling of the outer sheath of the microcannula sheath during the catheterization process. Therefore, how to further improve the success rate and safety of the blunt separation method needs to be solved urgently, in order to further improve clinical work efficiency and ensure patient safety. Utility Model Content
[0007] The utility model aims to provide a blunt separation method skin expansion device, which has the advantages of not needing to cut and expand the puncture hole again, simply relying on skin elasticity to expand the hole, and not causing secondary damage to the puncture hole.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] A blunt separation skin expansion device, comprising a blunt separation handle, a thick expansion needle and a thin expansion needle;
[0010] The thick enlarged needle and the blunt separation handle are detachably connected;
[0011] The thin expanded needle and the blunt separation handle are detachably connected;
[0012] The thick flaring needle and the thin flaring needle are respectively located at the upper and lower sides of the blunt separation handle;
[0013] The thick flaring needle, the thin flaring needle and the blunt separation handle are all provided with a through guide wire channel.
[0014] Working principle of the blunt dissection handle, coarse flaring needle and fine flaring needle:
[0015] The function of the blunt separation handle is to facilitate the staff to apply force by hand, and also to prevent the staff from slipping when holding the side wall of the fine thread column or the coarse thread column. The connection method between the coarse flaring needle, the fine flaring needle and the blunt separation handle is detachable, including snap-fit, threaded connection or plug-in connection. The coarse flaring needle and the fine flaring needle are installed in a detachable manner, which is conducive to storage and processing when leaving the factory. The diameters of the coarse flaring needle and the fine flaring needle are different, in order to match different flaring calibers.
[0016] Preferably, an upper threaded seat is provided at the upper end of the blunt separation handle, and correspondingly, a fine threaded column is provided at the end of the thin expanded needle which is threadedly fixed to the upper threaded seat.
[0017] Among them, the upper thread seat and the fine thread column are screwed together, which has a more stable connection strength than buckle connection or plug connection, and also avoids the staff from slipping when pushing the needle.
[0018] Preferably, the end of the thin flaring needle facing away from the thin threaded column is provided with a thin conical flaring portion.
[0019] Among them, the thin cone-shaped skin expansion part is cone-shaped and can be inserted into the puncture hole, thereby using the elasticity of the skin itself to achieve the purpose of expansion.
[0020] Preferably, a lower threaded seat is provided at the lower end of the blunt separation handle, and correspondingly, a coarse threaded column is provided at the end of the coarse expanded needle which is threadedly fixed to the lower threaded seat.
[0021] Among them, the lower thread seat and the coarse thread column are threaded together, which is beneficial to the stability of the connection between the coarse expanded needle and the blunt separation handle, and is convenient for disassembly and storage before leaving the factory.
[0022] Preferably, the end of the coarse flaring needle facing away from the coarse threaded column is provided with a coarse conical flaring portion.
[0023] Preferably, arc-shaped grooves are provided on the outer sides of the thick flared needle and the thin flared needle.
[0024] The arc-shaped groove has the function of reducing the contact area between the sides of the thick enlarged needle and the thin enlarged needle and the skin inside the puncture port, thereby preventing the skin inside the puncture port from being bent and twisted.
[0025] Preferably, both ends of the blunt separation handle are provided with upwardly tilted extension portions.
[0026] The provision of the extension portion can assist the staff in applying force better and prevent the hand from slipping due to contact with the blunt separation handle.
[0027] Compared with the prior art, the beneficial effects of the utility model are:
[0028] 1. It is as large as the outer diameter of the micro-cannula sheath in the PICC catheter assembly (4.5F / 5.5F), avoiding excessive expansion of the puncture site and reducing the risk of bleeding.
[0029] 2. A blunt separation device is used to avoid local damage caused by multiple skin expansions. The blunt separation device can prevent expansion slippage from causing the separation device to bend and twist. At the same time, the operation of the separation device does not rely on the operator's skills and experience, and the skin expansion range and depth are relatively fixed.
[0030] 3. There is no need to cut and expand the puncture site, which can avoid increasing the wound area of the puncture site and truly achieve minimally invasive surgery. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a schematic diagram of the structure of the skin expansion device using the blunt separation method;
[0032] Figure 2 It is a structural schematic diagram (section) of the blunt separation method skin expansion device.
[0033] 1. Fine tapered skin expansion part, 2&10. Arc-shaped groove, 3. Coarse expansion needle, 4. Fine thread column, 5. Upper thread seat, 6. Extension part, 7. Blunt separation handle, 8. Lower thread seat, 9. Coarse thread column, 11. Coarse expansion needle, 12. Coarse tapered skin expansion part, 13. Circular guide wire channel. DETAILED DESCRIPTION
[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] Based on the above description, this embodiment describes the size of the blunt separation method skin expansion device from the perspective of application, specifically:
[0036] Blunt separation method skin expansion device, the main part includes:
[0037] Blunt separation handle 7;
[0038] Coarse expansion needle 11;
[0039] Fine flared needle3.
[0040] The lengths of the thick enlarged needle 11 and the thin enlarged needle 3 are both 2 cm.
[0041] The outer surfaces of the thick expanding needle 11 and the thin expanding needle 3 are provided with arc grooves, which increase the friction force.
[0042] The front ends of the thick enlarging needle 11 and the thin enlarging needle 3 are respectively provided with a thick tapered skin enlarging portion 12 and a thin tapered skin enlarging portion 1. The thick tapered skin enlarging portion 12 and the thin tapered skin enlarging portion 1 are conical in shape and 0.5 cm in length, and are used to expand the puncture opening.
[0043] The blunt separation handle 7 is in the shape of a cuboid, with a length, width and height of 3 cm*0.5 cm*0.5 cm.
[0044] The circular guide wire channel 13 is a circular guide wire channel, cylindrical, with a diameter of 0.05 cm and a length of 5.5 cm. The head end of the guide wire channel 13 is located at both ends of the thin flaring needle 3 and the thick flaring needle 11. After the connection and combination, it passes through the thin flaring needle 3, the blunt separation handle 7 and the thick flaring needle 11 from top to bottom.
Claims
1. Blunt separation method skin expansion device, characterized in that: It comprises a blunt separation handle (7), a thick enlarging needle (11) and a thin enlarging needle (3); The thick enlarged needle (11) and the blunt separation handle (7) are detachably connected; The thin expanded needle (3) and the blunt separation handle (7) are detachably connected; The thick enlarging needle (11) and the thin enlarging needle (3) are respectively located on the upper and lower sides of the blunt separation handle (7); The thick enlarging needle (11), the thin enlarging needle (3) and the blunt separation handle (7) are all provided with a guide wire channel (13) that penetrates therethrough.
2. The blunt separation method skin expansion device according to claim 1, characterized in that: An upper threaded seat (5) is provided at the upper end of the blunt separation handle (7), and correspondingly, a fine threaded column (4) is provided at the end of the fine expanded needle (3) and is threadedly fixed to the upper threaded seat (5).
3. The blunt separation method skin expansion device according to claim 2, characterized in that: The end of the thin expansion needle (3) facing away from the thin threaded column (4) is provided with a thin conical expansion portion (1).
4. The blunt separation method skin expansion device according to claim 1, characterized in that: A lower threaded seat (8) is provided at the lower end of the blunt separation handle (7), and correspondingly, a coarse threaded column (9) which is threadedly fixed to the lower threaded seat (8) is provided at the end of the coarse expansion needle (11).
5. The blunt separation method skin expansion device according to claim 4, characterized in that: The end of the coarse enlarging needle (11) facing away from the coarse threaded column (9) is provided with a coarse conical enlarging portion (12).
6. The blunt separation method skin expansion device according to claim 1, characterized in that: The outer sides of the thick expanding needle (11) and the thin expanding needle (3) are both provided with arc-shaped grooves (2, 10).
7. The blunt separation method skin expansion device according to claim 1, characterized in that: Both ends of the blunt separation handle (7) are provided with upwardly tilted extension parts (6).