Remaining needle capable of preventing pressure injury

Abstract

The remaining needle comprises a steel needle catheter part, a catheter seat and a needle holding handle which are sequentially arranged, an isolation plug is arranged in an inner cavity of the catheter seat, a connector on the side face of the catheter seat is connected with an infusion tee joint through an extension tube, plug-in type suspended wing plates are arranged on the two sides of the lower portion of the catheter seat in a plug-in mode, and the needle holding handle is connected with the plug-in type suspended wing plates. And after the remaining needle is fixed, the plug-in type suspended wing plate is in contact with the skin surface of a patient through a flexible contact structure arranged at the bottom of the plug-in type suspended wing plate. The problem that an existing unfolded plate-shaped structure cannot be subjected to adaptive size and structure adjustment according to the condition of a patient is solved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to an indwelling needle for preventing pressure injury. Background Art

[0002] As a commonly used medical device in clinical practice, the core function of the indwelling venous needle is to establish a long-term venous access through a catheter, reducing the pain of patients caused by repeated punctures. However, traditional indwelling needles are prone to cause medical device-related pressure injuries during long-term indwelling, mainly manifested as redness, breakage of the skin around the puncture site, and even necrosis of deep tissues.

[0003] In the prior art, to alleviate the problem of pressure injury, the current mainstream technical solution is to add an expandable plate-like structure at the bottom of the indwelling needle hub (catheter connection seat). Specifically, the solution disclosed in the patent with the application number "202220762069.8" can be referred to for understanding. Theoretically, it can disperse local pressure, but there are still some defects in clinical practice. First, the expandable plate-like structure is generally fixed and integrally structured with the needle hub. When facing some special patients, it is impossible to adaptively adjust the size and structure of the expandable plate-like structure according to the needs of the patients. In this way, the expandable plate-like structure cannot fit well with the patient's body surface, but is more likely to cause greater damage to the patient. The second point is that the gap between the expandable plate-like structure and the skin is prone to accumulate sweat or exudate, forming a humid microenvironment and increasing the probability of infection. Content of the Utility Model

[0004] The purpose of the utility model is to provide an indwelling needle for preventing pressure injury, which solves the problem that the existing expandable plate-like structure cannot be adaptively adjusted in size and structure according to the situation of patients.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An indwelling needle for preventing pressure injury, comprising a steel needle catheter part, a catheter hub and a needle holder arranged in sequence. An isolation plug is arranged in the inner cavity of the catheter hub. The interface on the side of the catheter hub is connected to an infusion three-way through an extension tube. Plug-in suspended wing plates are inserted on both sides of the lower part of the catheter hub. After the indwelling needle is fixed, the plug-in suspended wing plates are in contact with the skin surface of the patient through a flexible contact structure arranged at the bottom thereof.

[0007] Since the deployed plate structure in this application is a plug-in suspended wing plate, it is detachably connected to the catheter seat through a plug-in structure. A general-purpose plug-in suspended wing plate can be used for ordinary patients. When facing some special patients, the general-purpose plug-in suspended wing plate can be replaced, and then a plug-in suspended wing plate that better matches the structure of the patient's indwelling needle can be installed. The plate body of this plug-in suspended wing plate that is more suitable for the patient can be constructed by means of 3D printing or the like. After construction, only the flexible contact structure needs to be installed at the bottom of the plate body for use. The flexible contact structure can be arranged on the bottom surface of the plate body by means of attachment. In this solution, the plug-in suspended wing plate can effectively disperse local pressure, and it is a suspended plate body structure, that is, when in use, the plate body does not directly press on the puncture site, but contacts the skin surface of the patient through the flexible contact structure, expanding the space between the plate body and the skin, and can solve the problem that the gap between the existing deployed plate structure and the skin is prone to accumulate sweat or exudate, forming a humid microenvironment, and reducing the infection probability.

[0008] As a further preference of the present utility model, insertion slots are provided on both sides of the lower part of the catheter seat. The insertion slots are arranged along the center line direction of the catheter seat. One end of the insertion slot is a closed structure, and the other end of the insertion slot is provided with an open insertion port. One end of the plug-in suspended wing plate is provided with an insertion slot connection block adapted to the insertion slot, and the plug-in suspended wing plate and the catheter seat are detachably connected through the insertion slot and the insertion slot connection block.

[0009] By providing an insertion slot with an open insertion port, the connection between the plug-in suspended wing plate and the catheter seat can be quickly completed, and the plug-in suspended wing plate can also be conveniently and quickly removed from the catheter seat.

[0010] As a further preference of the present utility model, a rotatable limit flap is further provided at the open insertion port end of the insertion slot. The rotatable limit flap can be rotated to the front of the open insertion port. The rotatable limit flap is rotatably connected to the catheter seat through a rotating shaft. The rotating shaft is perpendicular to the plane where the open insertion port is located. A pressing head is provided at the outer end of the rotating shaft, and the pressing head is threadedly connected to the rotating shaft.

[0011] Another important aspect in preventing pressure injuries is to reduce friction. After changing the existing fixed plate-like structure to a plug-in suspended wing plate, if it is not limited after being inserted and connected to the catheter base, then when the patient's dressing or limb moves, the plug-in suspended wing plate is prone to small back-and-forth movements. This will rub the skin surface and cause damage to the skin surface. Therefore, a rotary limiting flap is provided to limit the plug-in suspended wing plate. After inserting the insertion slot connecting block of the plug-in suspended wing plate into the insertion slot, rotate the rotary limiting flap to the front of the open insertion port, so that the plug-in suspended wing plate can be limited to prevent it from moving back and forth and causing friction damage to the skin. The inner end of the pressing head touches the rotary limiting flap, which can press and position the rotary limiting flap. Turning the pressing head outward can loosen the rotary limiting flap.

[0012] As a further preference of the present utility model, the plug-in suspended wing plate includes a wing plate body and a flat silicone gasket strip. The flat silicone gasket strip is evenly arranged on the bottom surface of the wing plate body, and the bottom surface of the flat silicone gasket strip is flush with the bottom surface of the catheter base.

[0013] The flat silicone gasket strip is a flexible contact structure arranged at the bottom of the plug-in suspended wing plate. The flat structure can increase the contact area as much as possible, so that the local pressure can be more evenly dispersed.

[0014] As a further preference of the present utility model, the edge between the flat silicone gasket strips is an arc-shaped edge.

[0015] The arc-shaped edge can prevent stress from concentrating at the edge part of the flat silicone gasket strip.

[0016] As a further preference of the present utility model, a silicone edge sleeve is further provided at the edge of the wing plate body, and the bottom surface of the silicone edge sleeve is flush with the bottom of the bottom silicone cushion block.

[0017] The wing plate is made of hard plastic material, which can expand the contact area. However, due to the lack of flexible buffer at its edge, linear cutting stress is easily formed on the skin at its position during dressing compression or limb movement. When the wing plate is lifted by the flat silicone gasket strip, the above situation still cannot be completely avoided. Therefore, a silicone edge sleeve is used in this solution to solve the above problem. After using the silicone edge sleeve, the contact between the edge of the wing plate body and the skin can be changed from the original hard contact to a flexible contact, thus solving the problem of linear cutting stress.

[0018] As a further preference of the present utility model, ventilation holes are evenly arranged in the middle of the wing plate body.

[0019] In addition to pressure, airtightness also has a certain impact on the cause of pressure injuries. Therefore, ventilation holes are opened in the middle of the wing plate body to improve air permeability and effectively reduce the probability of pressure injuries.

[0020] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0021] 1. Since the expandable plate-like structure in this application is a plug-in suspended wing plate, it is detachably connected to the catheter seat through a plug-in structure. For ordinary patients, a general-purpose plug-in suspended wing plate can be used. For some special patients, the general-purpose plug-in suspended wing plate can be replaced, and then a plug-in suspended wing plate that better matches the structure of the patient's indwelling needle can be installed. The plate body of this plug-in suspended wing plate that is more suitable for the patient can be constructed by 3D printing or other methods. After construction, only a flexible contact structure needs to be installed at the bottom of the plate body for use. The flexible contact structure can be arranged on the bottom surface of the plate body by attachment. In this solution, the plug-in suspended wing plate can effectively disperse local pressure, and it is a suspended plate body structure, that is, when in use, the plate body does not directly press on the needle insertion site, but contacts the patient's skin surface through the flexible contact structure, expanding the space between the plate body and the skin, and can solve the problem that the gap between the existing expandable plate-like structure and the skin is prone to accumulate sweat or exudate, forming a humid microenvironment, reducing the infection probability.

[0022] 2. By setting the plug-in slot with an open plug-in interface, the connection between the plug-in suspended wing plate and the catheter seat can be completed quickly, and the plug-in suspended wing plate can be conveniently and quickly removed from the catheter seat.

[0023] 3. Another important point in preventing pressure injuries is to reduce friction. After changing the existing fixed plate-like structure to a plug-in suspended wing plate, if it is not limited after being inserted and connected to the catheter seat, then when the patient's dressing or limb moves, the plug-in suspended wing plate is prone to small back-and-forth movements, which will rub the skin surface and cause damage to the skin surface. Therefore, a rotary limiting flap is set to limit the plug-in suspended wing plate. After the connection block of the plug-in slot of the plug-in suspended wing plate is inserted into the plug-in slot, the rotary limiting flap is rotated to the front of the open plug-in interface, so that the plug-in suspended wing plate can be limited to prevent it from moving back and forth and causing frictional damage to the skin. The inner end of the pressing head touches the rotary limiting flap, which can play a pressing and positioning role on the rotary limiting flap. Turning the pressing head outward can loosen the rotary limiting flap.

[0024] 4. The flat silicone gasket is the flexible contact structure arranged at the bottom of the plug-in suspended wing plate. The flat structure can increase the contact area as much as possible, so that the local pressure can be more evenly dispersed.

[0025] 5. The arc-shaped edge can prevent stress from concentrating at the edge of the flat silicone gasket strip.

[0026] 6. The wing plate is made of hard plastic material. Although it can expand the contact area, due to the lack of flexible buffering at its edge, linear cutting stress is easily formed on the skin at its position when the dressing is pressed or the limb moves. When the wing plate is lifted by the flat silicone gasket strip, the above situation still cannot be completely avoided. Therefore, in this solution, a silicone edge sleeve is used to solve the above problem. After using the silicone edge sleeve, the contact between the edge of the wing plate body and the skin can be changed from the original hard contact to flexible contact, thus solving the problem of linear cutting stress.

[0027] 7. In addition to pressure, airtightness also has a certain impact on the cause of pressure injury. Therefore, ventilation holes are opened in the middle of the wing plate body to improve air permeability and effectively reduce the probability of pressure injury. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the present utility model.

[0029] Figure 2 is a schematic connection structure diagram of the catheter seat and the plug-in suspended wing plate of the present utility model.

[0030] Figure 3 is Figure 2 enlarged view of part A of

[0031] 1 - steel needle catheter part; 11 - socket connection block; 2 - catheter seat; 21 - socket; 3 - needle holding handle; 4 - isolation plug; 5 - extension tube; 6 - infusion three-way; 7 - plug-in suspended wing plate; 71 - wing plate body; 711 - ventilation hole; 72 - flat silicone gasket strip; 8 - rotary limit flap; 9 - rotating shaft; 10 - pressing head; 12 - silicone edge sleeve. Detailed Embodiment

[0032] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Accordingly, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0035] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific Embodiment 1:

[0039] Figure 1 、 Figure 2 、 Figure 3A indwelling needle for preventing pressure injuries is shown, including a steel needle catheter part 1, a catheter seat 2 and a needle holder 3 arranged in sequence. An isolation plug 4 is provided in the inner cavity of the catheter seat 2. The interface on the side of the catheter seat 2 is connected to an infusion three-way 6 through an extension tube 5. Plug-in suspended wings 7 are inserted on both sides of the lower part of the catheter seat 2. After the indwelling needle is fixed, the plug-in suspended wings 7 are in contact with the skin surface of the patient through a flexible contact structure provided at the bottom thereof.

[0040] Since the expandable plate-like structure in this application is a plug-in suspended wing, it is detachably connected to the catheter seat through a plug-in structure. For ordinary patients, a general-purpose plug-in suspended wing can be used. For some special patients, the general-purpose plug-in suspended wing can be replaced, and then a plug-in suspended wing that better matches the structure at the indwelling needle insertion site of the patient can be replaced. The plate body of this plug-in suspended wing that is more suitable for the patient can be constructed by 3D printing or other methods. After construction, only a flexible contact structure needs to be installed at the bottom of the plate body for use. The flexible contact structure can be arranged on the bottom surface of the plate body by attachment. In this solution, the plug-in suspended wing can effectively disperse local pressure, and it is a suspended plate body structure, that is, when in use, the plate body does not directly press on the needle insertion site, but is in contact with the skin surface of the patient through the flexible contact structure, expanding the space between the plate body and the skin, and can solve the problem that the gap between the existing expandable plate-like structure and the skin is prone to accumulate sweat or exudate, forming a humid microenvironment, and reducing the infection probability. Specific Embodiment 2:

[0042] This embodiment further describes the catheter seat 2 on the basis of Specific Embodiment 1. Plug-in slots 21 are provided on both sides of the lower part of the catheter seat 2. The plug-in slots 21 are arranged along the center line direction of the catheter seat 2. One end of the plug-in slot 21 is a closed structure, and the other end of the plug-in slot 21 is provided with an open plug-in interface. One end of the plug-in suspended wing 7 is provided with a plug-in slot connection block 11 adapted to the plug-in slot 21. The plug-in suspended wing 7 and the catheter seat 2 are detachably connected through the plug-in slot 21 and the plug-in slot connection block 11.

[0043] By providing a plug-in slot with an open plug-in interface, the connection between the plug-in suspended wing and the catheter seat can be quickly completed, and the plug-in suspended wing can be conveniently and quickly removed from the catheter seat. Specific Embodiment 3:

[0045] This embodiment further illustrates the insertion slot 21 on the basis of the specific embodiment 2. A rotatable limit flap 8 is provided at the open insertion port end of the insertion slot 21. The rotatable limit flap 8 can be rotated to the front of the open insertion port. The rotatable limit flap 8 is rotatably connected to the catheter base 2 through a rotating shaft 9. The rotating shaft 9 is perpendicular to the plane where the open insertion port is located. A pressing head 10 is provided at the outer end of the rotating shaft 9. The pressing head 10 is threadedly connected to the rotating shaft 9.

[0046] Another important point in preventing pressure injuries is to reduce friction. After changing the existing fixed plate-like structure to a plug-in suspended wing plate, if it is not limited after being inserted and connected to the catheter base, then when the patient's dressing or limb moves, the plug-in suspended wing plate is likely to move back and forth slightly. In this way, it will rub the skin surface and cause damage to the skin surface. Therefore, a rotatable limit flap is provided to limit the plug-in suspended wing plate. After inserting the insertion slot connection block of the plug-in suspended wing plate into the insertion slot, rotate the rotatable limit flap to the front of the open insertion port, so that the plug-in suspended wing plate can be limited to prevent it from moving back and forth and rubbing the skin. The inner end of the pressing head touches the rotatable limit flap and can play a role in pressing and positioning the rotatable limit flap. Turning the pressing head outward can loosen the rotatable limit flap. Specific embodiment 4:

[0048] This embodiment further illustrates the plug-in suspended wing plate 7 on the basis of the specific embodiment 1. The plug-in suspended wing plate 7 includes a wing plate body 71 and a flat silicone rubber strip 72. The flat silicone rubber strips 72 are evenly arranged on the bottom surface of the wing plate body 71. The bottom surface of the flat silicone rubber strip 72 is flush with the bottom surface of the catheter base 2.

[0049] The flat silicone rubber strip is a flexible contact structure provided at the bottom of the plug-in suspended wing plate. The flat structure can increase the contact area as much as possible, so that the local pressure can be more evenly dispersed. Both the wing plate body and the flat silicone rubber strip are transparent, which is convenient for observing the skin condition. Specific embodiment 5:

[0051] This embodiment further illustrates the flat silicone rubber strip 72 on the basis of the specific embodiment 4. The edge between the surfaces of the flat silicone rubber strip 72 is an arc-shaped edge.

[0052] The arc-shaped edge can prevent stress from concentrating at the edge part of the flat silicone rubber strip. Specific embodiment 6:

[0054] This embodiment further describes the wing plate body 71 on the basis of the specific embodiment 4. A silicone edge sleeve 12 is further provided at the edge of the wing plate body 71, and the bottom surface of the silicone edge sleeve 12 is flush with the bottom of the flat silicone gasket strip 72.

[0055] The wing plate is made of hard plastic material. Although it can expand the contact area, due to the lack of flexible buffer at its edge, linear cutting stress is easily formed on the skin at its position when the dressing is pressed or the limb moves. When the wing plate is lifted by the flat silicone gasket strip, the above situation still cannot be completely avoided. Therefore, a silicone edge sleeve is adopted in this solution to solve the above problem. After using the silicone edge sleeve, the contact between the edge of the wing plate body and the skin is changed from the original hard contact to a flexible contact, thus solving the problem of linear cutting stress. Specific embodiment 7:

[0057] This embodiment further describes the wing plate body 71 on the basis of the specific embodiment 4. Ventilation holes 711 are evenly opened in the middle of the wing plate body 71.

[0058] In addition to pressure, airtightness also has a certain impact on the cause of pressure injury. Therefore, ventilation holes are opened in the middle of the wing plate body to improve air permeability and effectively reduce the probability of pressure injury.

[0059] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An indwelling needle for preventing pressure injuries, comprising a steel needle catheter portion (1), a catheter seat (2) and a needle holder (3) arranged in sequence, an isolation plug (4) is provided in the inner cavity of the catheter seat (2), and an interface on the side of the catheter seat (2) is connected to an infusion tee (6) through an extension tube (5), characterized in that: Insertable suspended wing plates (7) are inserted on both sides of the lower part of the catheter seat (2); after the indwelling needle is fixed, the insertable suspended wing plates (7) contact the patient's skin surface through a flexible contact structure arranged at the bottom thereof; Both sides of the lower part of the catheter seat (2) are provided with plug-in slots (21), the plug-in slots (21) are arranged along the centerline direction of the catheter seat (2), one end of the plug-in slot (21) is a closed structure, and the other end of the plug-in slot (21) is provided with an open plug-in interface, one end of the plug-in suspended wing plate (7) is provided with a plug-in slot connecting block (11) adapted to the plug-in slot (21), and the plug-in suspended wing plate (7) and the catheter seat (2) are connected to the plug-in slot via the plug-in slot (21). The connecting block (11) is detachably connected; the open plug-in interface end of the plug-in slot (21) is also provided with a rotatable limit baffle (8), the rotatable limit baffle (8) can be rotated to the front of the open plug-in interface, the rotatable limit baffle (8) is rotatably connected to the catheter seat (2) via a rotating shaft (9), the rotating shaft (9) is perpendicular to the plane where the open plug-in interface is located, and the outer end of the rotating shaft (9) is provided with a clamping head (10), and the clamping head (10) is threadedly connected to the rotating shaft (9).

2. The indwelling needle for preventing pressure injury according to claim 1, characterized in that: The plug-in suspended wing plate (7) comprises a wing plate body (71) and a flat silicone pad (72), wherein the flat silicone pad (72) is evenly arranged on the bottom surface of the wing plate body (71), and the bottom surface of the flat silicone pad (72) is flush with the bottom surface of the catheter seat (2).

3. The indwelling needle for preventing pressure injury according to claim 2, characterized in that: The edges between the surfaces of the flat silicone pad (72) are arc-shaped edges.

4. The indwelling needle for preventing pressure injury according to claim 2, characterized in that: A silicone edge sleeve (12) is also provided at the edge of the wing plate body (71), and the bottom surface of the silicone edge sleeve (12) is flush with the bottom of the flat silicone pad strip (72).

5. The indwelling needle for preventing pressure injury according to claim 2, characterized in that: The middle portion of the wing plate body (71) is evenly provided with air holes (711).

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