A three-section clamp positioning device for infusion ports
By designing a three-section clamp positioning device, the problems of inaccurate positioning of the infusion port and difficulty in needle removal were solved, achieving efficient positioning and safe puncture of the infusion port.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RENJI HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
- Filing Date
- 2025-02-28
- Publication Date
- 2026-06-30
AI Technical Summary
In the prior art, the positioning device of the infusion port makes it difficult to remove the infusion tube connected to the needle after puncture, and it is difficult to accurately locate the position of the infusion port, which can easily lead to needle displacement or puncture.
A three-section clamp positioning device was designed, including a first arc-shaped section, a second arc-shaped section, and a third arc-shaped section. Through the cooperation of a return spring and a positioning ring, a large-angle opening and closing can be achieved, which facilitates clamping and positioning of the infusion port and avoids puncture injuries.
It improves the convenience of needle removal and the positioning accuracy of the infusion port, avoids needle displacement and puncture, and enhances the safety and accuracy of puncture.
Smart Images
Figure CN224421633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of human necessities, especially to the field of medical auxiliary equipment, and in particular to a three-section clamp positioning device for infusion ports. Background Technology
[0002] An implantable port, formally known as a PORT, is a closed intravenous infusion system that is implanted permanently in the body. The port is buried under the skin, such as in the chest or upper arm area. Infusions or blood draws can be performed by puncturing the subcutaneous injection port.
[0003] During the puncture, medical staff locate the port-a-cath by touch, then use the thumb, index, or middle finger of their non-dominant hand (such as the left hand) to pinch the port-a-cath seat and insert the needle into the center of the port. However, novice medical staff often fail to locate the port-a-cath during the puncture process, or injure their fingers during the puncture or needle removal.
[0004] In the existing technology, a common solution is to wear a puncture-proof finger cot to avoid punctures, such as the technical solution disclosed in CN214547371U (a finger protective cot for removing an infusion port). This method is simple and effective, but after wearing the finger cot, the tactile sensitivity of the fingertip is reduced, making it difficult to touch and find the location of the infusion port, and also making it impossible to pinch and position it.
[0005] Another existing technology, CN222075632U (a puncture-resistant auxiliary device with positioning function), improves and optimizes the above solution by installing a plastic ring between the two finger cots. The plastic ring is fixed and positioned by clamping it around the infusion port, which facilitates puncture.
[0006] However, this solution still has the following drawbacks:
[0007] After puncture, the needle is connected to the infusion tubing for continuous infusion or blood drawing. At this time, the plastic ring needs to be removed. However, the opening of the plastic ring is too small, making it difficult to remove and easily scratching the needle, which may cause the needle to shift and cause harm to the patient.
[0008] When applying the clamp, simply place the ring directly onto the infusion port. If the location of the infusion port is unknown, it is difficult to locate accurately, and finding it becomes even more challenging after wearing a finger cot. Summary of the Invention
[0009] The purpose of this utility model is to provide a three-section clamp positioning device for infusion ports, which solves the technical problem in the prior art that the clamp ring is difficult to remove after needle puncture and that it is difficult to locate the position of the infusion port.
[0010] A three-section clamp positioning device for an infusion port includes a three-section clamp, comprising a first arc-shaped section, a second arc-shaped section, and a third arc-shaped section. One end of the first arc-shaped section is rotatably connected to one end of the second arc-shaped section, and the other end of the first arc-shaped section is rotatably connected to one end of the third arc-shaped section. Buffer blocks are respectively provided at the other ends of the second arc-shaped section and the third arc-shaped section. The device also includes a first finger sleeve and a second finger sleeve. The outer side wall of the first finger sleeve is connected to the outer arc edge of the second arc-shaped section via a first hinge, and the outer side wall of the second finger sleeve is connected to the outer arc edge of the third arc-shaped section via a second hinge.
[0011] Furthermore, a return spring is provided at the connection between the first arc-shaped section and the second arc-shaped section, and at the connection between the first arc-shaped section and the third arc-shaped section.
[0012] Furthermore, it includes a positioning ring, which is formed by three ring edges joined together to form a circle. The three ring edges are respectively fixed to the inner arc edge of the first arc segment, the inner arc edge of the second arc segment, and the inner arc edge of the third arc segment through support rods.
[0013] Furthermore, the first finger sleeve is a thumb sleeve, and the corresponding second finger sleeve is an index finger sleeve.
[0014] Compared with existing technologies, the advantages of this invention are positive and obvious:
[0015] The second and third arc-shaped sections of the three-section clamp of this utility model can be opened at a large angle, increasing the opening and closing angle and facilitating removal after puncture.
[0016] The three-section sleeve of this utility model gradually tightens around the infusion port through closure, making it easy to find the location of the infusion port and quickly position it.
[0017] This utility model provides a finger cot to prevent puncture wounds.
[0018] The reset spring of this utility model makes it easier to open the three-section clamp.
[0019] The positioning ring of this utility model further positions the center of the infusion port, improving the accuracy of puncture. Attached Figure Description
[0020] Figure 1 A schematic diagram of the structure of the three-section hoop when closed in Embodiment 1 of this utility model.
[0021] Figure 2 A schematic diagram of the structure of the three-section sleeve when it is opened in Embodiment 1 of this utility model.
[0022] Figure 3 A schematic diagram of the structure of Embodiment 2 of this utility model.
[0023] Figure 4 A schematic diagram of the reset spring in Embodiment 2 of this utility model.
[0024] Figure 5 A schematic diagram of the structure of Embodiment 3 of this utility model.
[0025] In the diagram: 1. Three-section sleeve; 101. First arc-shaped section; 102. Second arc-shaped section; 103. Third arc-shaped section; 104. First hinge; 105. Second hinge; 2. First finger sleeve; 3. Second finger sleeve; 4. Return spring; 5. Buffer block; 6. Positioning ring; 601. Ring edge. Detailed Implementation
[0026] The following embodiments will further illustrate the present invention, but are not intended to limit the present invention. Example
[0027] like Figures 1 to 2 As shown, this embodiment provides a positioning device for a three-section sleeve 1 of an infusion port, including a three-section sleeve 1. The inner ring of the three-section sleeve 1 is circular. The three-section sleeve 1 includes a first arc-shaped section 101, a second arc-shaped section 102, and a third arc-shaped section 103. The first arc-shaped section 101, the second arc-shaped section 102, and the third arc-shaped section 103 are spliced together. One end of the first arc-shaped section 101 is rotatably connected to one end of the second arc-shaped section 102, and the other end of the first arc-shaped section 101 is rotatably connected to one end of the third arc-shaped section 103.
[0028] A buffer block 5 is fixed to the other end of the second arc-shaped section 102 and the other end of the third arc-shaped section 103 respectively. This is to prevent the second arc-shaped section 102 and the third arc-shaped section 103 from colliding and being damaged after the three-section sleeve 1 is closed, and also to increase the stability after closure.
[0029] The device includes a first finger sleeve 2 and a second finger sleeve 3. The outer wall of the first finger sleeve 2 is connected to the outer arc edge of the second arc segment 102 via a first hinge 104, and the outer wall of the second finger sleeve 3 is connected to the outer arc edge of the third arc segment 103 via a second hinge 105. This allows the first finger sleeve 2 and the second finger sleeve 3 to control the second arc segment 102 and the third arc segment 103 to rotate and open around the first arc segment 101, respectively. The first hinge 104 and the second hinge 105 increase the range of motion of the first finger sleeve 2 and the second finger sleeve 3, making it more comfortable to insert and operate the fingers.
[0030] The first finger sleeve 2 is a thumb sleeve, and the corresponding second finger sleeve 3 is an index finger sleeve. The opening and closing effect of the three-section sleeve 1 is achieved by the opening and closing of the thumb and index finger through the web of the hand.
[0031] How to use this embodiment:
[0032] Insert the thumb into the first finger sleeve 2 and the index finger into the second finger sleeve 3. The opening and closing of the thumb and index finger through the web of the thumb and index finger causes the second arc-shaped segment 102 and the third arc-shaped segment 103 to rotate around the first arc-shaped segment 101, thereby realizing the opening and closing of the three-section sleeve 1. In use, open the three-section sleeve 1 and slowly close the sleeve on the patient's skin around the approximate location of the infusion port. Since the infusion port is slightly convex, the convexity can be easily felt when the sleeve closes. Close the sleeve further around the convexity to achieve the effect of fitting the infusion port into the three-section sleeve 1.
[0033] After the clamp is successfully tightened, proceed with the puncture. After puncture, do not remove the needle. Open the three-section clamp 1 to complete the puncture. Example
[0034] like Figure 3 , Figure 4 As shown, this embodiment is a preferred solution of Embodiment 1. A return spring 4 is installed at the connection between the first arc-shaped section 101 and the second arc-shaped section 102, and at the connection between the first arc-shaped section 101 and the third arc-shaped section 103. The return spring 4 is a torsion spring, which includes two torsion arms. The two torsion arms are respectively connected to the first arc-shaped section 101, the second arc-shaped section 102, or the third arc-shaped section 103. When the torsion spring is in its free state, the three-section sleeve 1 is in the open state, which makes it easier to open the three-section sleeve 1. Example
[0035] like Figure 5 As shown, this embodiment is a preferred embodiment of Example 1, including a positioning ring 6. The positioning ring 6 is a circle formed by three ring edges 601 joined together. The three ring edges 601 are respectively fixed to the inner arc edges of the first arc-shaped section 101, the second arc-shaped section 102, and the third arc-shaped section 103 via support rods. The positioning ring 6 further positions the center of the infusion port, improving the accuracy of puncture.
[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A three-section clamp positioning device for an infusion port, characterized in that: The system includes a three-section sleeve (1), which comprises a first arc-shaped section (101), a second arc-shaped section (102), and a third arc-shaped section (103). One end of the first arc-shaped section (101) is rotatably connected to one end of the second arc-shaped section (102), and the other end of the first arc-shaped section (101) is rotatably connected to one end of the third arc-shaped section (103). Buffer blocks (5) are respectively provided at the other ends of the second arc-shaped section (102) and the third arc-shaped section (103). It includes a first finger sleeve (2) and a second finger sleeve (3). The outer side wall of the first finger sleeve (2) is connected to the outer arc edge of the second arc segment (102) through a first hinge (104). The outer side wall of the second finger sleeve (3) is connected to the outer arc edge of the third arc segment (103) through a second hinge (105).
2. The three-section clamp positioning device for a port of entry as described in claim 1, characterized in that: A return spring (4) is provided at the connection between the first arc segment (101) and the second arc segment (102), and at the connection between the first arc segment (101) and the third arc segment (103).
3. The three-section clamp positioning device for a port of entry as described in claim 1, characterized in that: The positioning ring (6) is composed of three ring edges (601) joined together to form a circle. The three ring edges (601) are respectively fixed to the inner arc edge of the first arc section (101), the inner arc edge of the second arc section (102) and the inner arc edge of the third arc section (103) through support rods.
4. The three-section clamp positioning device for a port of entry as described in claim 1, characterized in that: The first finger sleeve (2) is a thumb sleeve, and the corresponding second finger sleeve (3) is an index finger sleeve.