Nephrostomy tube fixing device

Abstract

The present invention relates to the technical field of fixing devices, and in particular to a nephrostomy tube fixing device, comprising a belly band that can be firmly fixed around the waist, and a cover body, wherein the cover body is fixed on the belly band and covers the position of the nephrostomy tube passing through the human body through an opening on the skin-contacting side, the back skin side of the cover body is also provided with a limiting hole for maintaining the stability of the position of the nephrostomy tube passing through the human body, and a limiting protrusion, which is fixed on the nephrostomy tube and separates the nephrostomy tube passing through the human body into a buffer section inside the cover body and a connecting section for connecting to a drainage bag, the diameter of the limiting protrusion is larger than the diameter of the limiting hole to prevent the buffer section from detaching from the cover body through the limiting hole, and the arrangement of the belly band, the cover body and the limiting protrusion can ensure that the insertion section of the nephrostomy tube placed in the human body remains stable and free of stress when the connecting section of the nephrostomy tube is subjected to a large traction force, thereby preventing the nephrostomy tube from falling off or loosening.

Description

Technical Field

[0001] The present invention relates to the technical field of fixing devices, in particular to a nephrostomy tube fixing device. Background Art

[0002] A nephrostomy tube is a drainage tube left in place after a nephrostomy procedure. It is primarily used for urine drainage, extracorporeal circulation support, renal replacement therapy, urinary tract infection control, and renal function monitoring. Specifically, a nephrostomy tube bypasses obstruction to primary urine outflow by creating a permanent channel, allowing urine to flow directly into the bladder or an external container, thereby alleviating the pressure and discomfort caused by urinary retention. During certain surgical procedures, when the kidney is temporarily removed for procedures, a nephrostomy tube can be used to drain blood into the extracorporeal circulation system to maintain the patient's lifespan. For patients with acute or chronic renal failure, long-term retention of a nephrostomy tube can be an option for long-term dialysis, providing stable blood purification without the need for frequent vascular access changes. Providing a new drainage pathway can help reduce the incidence of urinary tract infections. After a nephrostomy tube is placed, renal function can be assessed by measuring the volume and properties of fluid within the tube, which is crucial for guiding treatment decisions and assessing prognosis.

[0003] The retention time of a nephrostomy tube varies depending on the application and purpose of the nephrostomy, ranging from one month to a lifetime. A common problem with existing nephrostomy tubes in daily care is that the fixation effect of the nephrostomy tubes is poor, and the nephrostomy tubes often fall off or become loose due to accidental contact in daily life. The clinical method used is to adhere the nephrostomy tubes to the skin with tape, but the tape is easy to fall off when the human body shakes or sweats, and the adhesion strength of the tape is limited. It will directly fall off the skin under a large traction force, so this fixation method is obviously not able to fully meet the fixation requirements of the nephrostomy tubes. Summary of the Invention

[0004] The present invention provides a nephrostomy tube fixing device, which is provided with an abdominal belt, a cover body and a limiting protrusion. When the connecting section of the nephrostomy tube is subjected to a large traction force, the insertion section of the nephrostomy tube placed in the human body can still be ensured to remain in a stable and stress-free state, thereby preventing the nephrostomy tube from falling off or loosening.

[0005] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0006] The present invention provides a nephrostomy tube fixing device, comprising a belly band that can be firmly fixed around the waist, and also comprising a cover body, wherein the cover body is fixed on the belly band and covers the position where the nephrostomy tube passes through the human body through an opening on the skin-contacting side, the cover body also has a limiting hole on the back skin side for maintaining the stability of the position of the nephrostomy tube passing through the human body, and a limiting protrusion, which is fixed on the nephrostomy tube and divides the nephrostomy tube passing through the human body into a buffer section and a connecting section for connecting to a drainage bag, the diameter of the limiting protrusion is larger than the diameter of the limiting hole to prevent the buffer section from detaching from the cover body through the limiting hole, the back skin side of the cover body is also connected to a limiting cap, the limiting hole for maintaining the stability of the position of the nephrostomy tube passing through the human body is provided on the limiting cap, the limiting cap is connected to the cover body by a spring, the cover body is provided with a through hole at the position corresponding to the limiting cap, the diameter of the through hole is larger than the diameter of the limiting protrusion, and the position of the limiting hole is spaced apart from the projection of the position of the nephrostomy tube passing through the human body on the vertical plane.

[0007] Preferably, it further comprises a accommodating layer fixed on the abdominal binder and located on one side of the cover body, the accommodating layer and the abdominal binder together define an accommodating chamber for accommodating part of the buffer section, and the accommodating chamber is communicated with the interior of the cover body through a communicating hole on the cover body.

[0008] Preferably, the limiting protrusion is integrally formed on the outer wall of the nephrostomy tube.

[0009] Preferably, the limiting protrusion is a bump adhered to the nephrostomy tube.

[0010] Preferably, the side of the accommodating layer facing away from the abdominal band is detachably connected to a portion fixed to the abdominal band.

[0011] Preferably, the two free ends of the abdominal binder are connected by a Velcro or a hook.

[0012] Preferably, the buffer section has a plurality of upper limit protrusions.

[0013] The beneficial effects of the present invention are: the cover body is stabilized at the waist position of the human body by the abdominal belt, so as to cover the position where the nephrostomy tube passes through the human body, thereby preventing the position from being impacted by external force and causing the nephrostomy tube to loosen. Since the nephrostomy tube is placed on the outer part of the human body, it is easy to be accidentally touched, causing the part of the nephrostomy tube outside the human body to pull the part of the nephrostomy tube inside the human body, thereby causing it to fall off or loosen. By arranging limiting protrusions on the outside of the nephrostomy tube at two points and arranging limiting holes on the back skin side of the cover body to prevent the limiting protrusions from detaching from the cover body, it is ensured that when the part of the nephrostomy tube outside the human body is subjected to traction, the part of the nephrostomy tube inside the human body will not loosen or detach.

[0014] By setting a sufficient length of the buffer section between the position where the nephrostomy tube passes through the human body and the limiting protrusion, when the connecting section of the nephrostomy tube outside the human body is subjected to a large traction force, the impact on the nephrostomy tube can be compensated by the displacement of the buffer section, thereby achieving a better fixation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a structural diagram of the prior art of the present invention:

[0017] Figure 2 is a perspective view of a first embodiment of the present invention;

[0018] Figure 3 The shape of the nephrostomy tube of the present invention after being fixed by the fixing device;

[0019] Figure 4 Schematic diagram of the structure of the first embodiment of the present invention;

[0020] Figure 5 is a schematic cross-sectional view of a first embodiment of the present invention;

[0021] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 7 This is a schematic diagram of the state in which the receiving layer of the present invention is opened;

[0023] Figure 8 2 is a schematic structural diagram of a second embodiment of the present invention;

[0024] Figure 9 is a perspective view of a second embodiment of the present invention;

[0025] Figure 10 is a cross-sectional schematic diagram of a second embodiment of the present invention;

[0026] Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure at point B in the middle.

[0027] In the figure, 1. skin; 2. nephrostomy tube; 201. insertion section; 202. buffer section; 203. connection section; 3. dressing; 4. tape; 5. abdominal binder; 6. cover body; 7. limiting hole; 8. opening; 9. limiting convex; 10. containing layer; 11. opening side; 12. spring; 13. limiting cap; 14. connecting hole; 15. connector; 16. perforation. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0029] In order to enable those skilled in the art to understand the inventive point of the present invention, the prior art part of the present invention is first described. Figure 1 After the nephrostomy tube 2 is inserted into the human body through the skin 1 at the waist position, a dressing 3 is generally used to cover the position of the penetration point to keep the penetration point clean. The nephrostomy tube 2 that penetrates into the designated position of the kidney includes an insertion section 201 placed in the human body and a part outside the human body. In order to avoid accidental contact, the part outside the human body is usually attached to the skin 1 at a certain distance from the penetration point using tape 4 (3M tape). For the sake of convenience of description, the nephrostomy tube 2 on both sides of the tape 4 and outside the human body is named as two parts. The first part from the penetration point to the adhesion position of the tape 4 is the buffer section 202, and the part extending from the adhesion position of the tape 4 to the direction away from the penetration point is named as the connecting section 2 03 (the free end of the connecting section 203 is used to connect the drainage bag, which is not shown in the figure). When the drainage tube is attached with the adhesive tape 4, if the connecting section 203 is pulled by an external force, the traction force will first be transferred to the adhesion point of the adhesive tape 4, and the external traction force will be offset by the adhesion force of the adhesive tape 4, thereby ensuring the stability of the position of the nephrostomy tube 2 in the human body. At the same time, under the adhesion of the adhesive tape 4, the buffer section 202 will be more attached to the skin 1, that is, its position relative to the skin 1 is limited, so that the human body can determine the approximate position of the buffer section 202 when it is active, and avoid touching the buffer section 202, which causes the nephrostomy tube 2 to loosen or fall off. This method is the existing clinical nephrostomy tube 2 fixation method.

[0030] The existing method of fixing the nephrostomy tube 2 has the following defects. First, the adhesion strength of the tape 4 is limited. If the connecting section 203 is subjected to a large traction force, it is easy to cause the tape 4 to fall off. At the same time, the buffer section 202 drives the insertion section 201 to move, causing the nephrostomy tube 2 to fall off or loosen. Second, the tape 4 is affected by the shaking force of the nephrostomy tube 2 during human movement or human sweating, and will gradually lose its adhesion to the skin 1, thereby falling off and losing the fixing effect on the nephrostomy tube 2. Third, when the nephrostomy tube 2 is fixed by the existing tape 4, the buffer section 202 will also shake synchronously when the human body moves, and long-term small-amplitude shaking will also involve the penetration point. Based on the above problems, the present invention overcomes them through the following improvements.

[0031] refer to Figure 2-Figure 6 , is a structural diagram of the first embodiment of the present invention, a nephrostomy tube fixing device includes an abdominal belt 5 and a cover body 6 fixed on the abdominal belt 5. When in use, the abdominal belt 5 is tied to the waist position of the human body, and then the cover body 6 on the abdominal belt 5 is aligned with the insertion point of the nephrostomy tube 2 for covering. Obviously, it is necessary to cover the insertion position of the nephrostomy tube 2 to keep the insertion position of the nephrostomy tube 2 not loose. The internal accommodating space size of the cover body 6 should meet the size of the dressing 3 covering the insertion point of the nephrostomy tube 2. At the same time, the side of the cover body 6 close to the skin 1, that is, the skin-contacting side (also called the inner side) should have an opening 8 to prevent the cover body 6 from pressing the insertion position of the nephrostomy tube 2. The cover body 6 is stabilized at the waist by the abdominal belt 5. Obviously, compared with the traditional tape 4, it can withstand greater traction. At the same time, compared with the tape 4, it will not be affected by sweating or In order to prevent the nephrostomy tube 2 from being detached due to the shaking of the nephrostomy tube 2, the outer part of the human body will not be affected by the traction force and affect the stability of the insertion section 201 of the human body, a limiting hole 7 is further provided on the back skin side of the cover body 6 (the relative position with the skin-contacting side mentioned above, which can also be referred to as the outer side), and a limiting protrusion 9 is further provided on the outer wall of the nephrostomy tube 2 (the outer wall part of the human body). For the convenience of description below, the part of the nephrostomy tube 2 placed outside the human body is named, and the position from the insertion position of the nephrostomy tube 2 to the limiting protrusion 9 is named as the buffer section 202, and the part of the limiting protrusion 9 extending away from the insertion position of the nephrostomy tube 2 is the connecting section 203 (for connecting the drainage bag). The diameter of the limiting protrusion 9 is larger than the diameter of the limiting hole 7, so as to keep the insertion section 201 of the nephrostomy tube 2 stable. The specific structure of the fixing device is referred to in Figure 2 During use, the nephrostomy tube 2 is fixed by a fixing device as follows Figure 3 The state shown in FIG. 1 is that the nephrostomy tube 2 is combined with the fixing device. Figure 4 As shown, it can have the principle reference of resisting external traction Figure 5 and Figure 6If the connecting section 203 is subjected to traction, it will tend to pull the buffer section 202 out of the cover body 6. Since the diameter of the limiting hole 7 on the back skin side of the cover body 6 is smaller than the diameter of the limiting protrusion 9, the limiting protrusion 9 cannot pass through the limiting hole 7, thereby offsetting the traction force of the connecting section 203, that is, the traction section drives the limiting protrusion 9 to move toward the outside of the cover body 6, and the abdominal band 5 offsets the traction force of the traction section by applying a reverse force to the cover body 6, thereby ensuring the stability of the buffer section 202 and the insertion section 201.

[0032] The effect of the above-mentioned buffer section 202 is that when the limiting protrusion 9 is subjected to the traction force of the connecting section 203, the limiting protrusion 9 will apply the traction force to the abdominal belt 5 through the cover body 6. When the abdominal belt 5 is fixed on the waist, the muscles of the waist change from a relatively relaxed state to a tightened state. At this time, the cover body 6 will produce a small displacement in the direction of applying traction force to the connecting section 203. The displacement is compensated by the release of the buffer section 202, thereby ensuring the stability of the insertion position of the nephrostomy tube 2.

[0033] In order to ensure that after the nephrostomy tube 2 is fixed by the fixing device, the buffer section 202 will not shake when the human body moves, thereby causing the insertion position of the nephrostomy tube 2 to loosen, a containing layer 10 is also fixed on the abdominal band 5. The containing layer 10 is preferably made of cloth. The containing layer 10 and the back skin side (outer side) of the abdominal band 5 together define a containing chamber for storing the buffer section 202. A connecting hole 14 is opened on the side wall of the cover body 6 to communicate with the interior of the containing chamber, so that the buffer section 202 can be placed inside the containing chamber. By being placed inside the containing chamber, the buffer section 202 can avoid large shaking when the human body moves, thereby ensuring the stability of the insertion section 201 of the nephrostomy tube 2. At the same time, the buffer section 202 is placed inside the containing chamber and will not cause the insertion section 201 to loosen or fall off due to external force generated by scratching when the human body moves.

[0034] Further, in order to enable the connecting section 203 of the nephrostomy tube 2 to be able to maximize the buffering when subjected to traction, reference Figures 8-11 This is a second embodiment of a nephrostomy tube fixing device of the present invention. Compared with the first embodiment, the dorsal skin side of the cover body 6 is not a vertical plate, and its dorsal skin side is further connected to a limiting cap 13. A limiting hole 7 for maintaining the stable position of the nephrostomy tube 2 passing through the human body is provided on the limiting cap 13. The limiting cap 13 is connected to the cover body 6 through a spring 12. The cover body 6 is provided with a perforation 16 at a position corresponding to the limiting cap 13. The diameter of the perforation 16 is larger than the diameter of the limiting protrusion 9. The schematic diagram of the fixing device of this embodiment after fixing the nephrostomy tube 2 is shown in FIG. Figure 8 and Figure 9 , which can achieve further buffering principle reference such as Figure 10 and Figure 11When the connecting section 203 is subjected to traction, the limiting protrusion 9 can drive the limiting cap 13 to move away from the cover body 6, and at the same time the spring 12 is stretched to resist the traction, thereby achieving a better buffering effect and avoiding the nephrostomy tube 2 from breaking due to a large traction force in a short period of time. That is, the stability of the insertion section 201 is further guaranteed by the sufficient release of the buffer section 202.

[0035] Furthermore, the limiting protrusion 9 of the above two embodiments can be integrally formed on the outer wall of the nephrostomy tube 2 during production, or can be a limiting protrusion 9 added later. Of course, it is preferred to use the limiting protrusion 9 added later. Since the two sides of the limiting protrusion 9 are respectively the buffer section 202 and the connecting section 203, the limiting protrusion 9 added later can set the position of the limiting protrusion 9 according to the patient's own situation, wherein the limiting protrusion 9 added later is preferably formed by winding the tape 4, that is, the tape 4 is used to surround the nephrostomy tube 2. The outer wall is wrapped with the adhesive tape 4 so that the limiting convexity 9 is formed into a size larger than the limiting hole 7. The limiting convexity 9 formed by winding the adhesive tape 4 has the advantages of convenient material acquisition and easy operation. Of course, two semicircular rings can also be used to adhere the limiting convexity 9 to the outer wall of the nephrostomy tube 2 with glue to form the limiting convexity 9. Of course, if the limiting convexity 9 is formed by winding the adhesive tape 4, in order to fully ensure the stability of the cooperation between the limiting convexity 9 and the limiting hole 7, the number of limiting convexities 9 can also be set to avoid the limiting convexity 9 from being separated from the limiting hole 7 due to extrusion deformation.

[0036] Since the communicating hole 14 is small in size and the accommodation chamber is in a narrow and long state, in order to facilitate the buffer layer to better enter the interior of the accommodation chamber, the side of the accommodation layer 10 facing away from the abdominal band 5 (named as the opening side 11) is detachably connected to the part fixed on the abdominal band 5. By opening the opening side 11, the Figure 7 The state shown can better pull the buffer section 202 into the interior of the accommodation chamber. After the buffer section 202 is placed inside the accommodation chamber, the open side 11 is closed. The above-mentioned detachable connection method is a zipper or Velcro connection.

[0037] Furthermore, in order to reduce the movement of the cover body 6 when subjected to traction, the abdominal belt 5 should not be elastic, and in order to ensure that the abdominal belt 5 is suitable for people with different waist circumferences, the two free ends of the abdominal belt 5 are connected by a connector 15. The connector 15 can be connected by Velcro, hook or buckle, among which the hook and buckle connection methods are more secure.

[0038] Furthermore, since the limiting protrusion 9 will rebound and move to one side of the skin 1 after the traction force disappears, in order to avoid the limiting protrusion 9 hitting the penetration point of the nephrostomy tube 2, the position of the limiting hole 7 is spaced from the projection of the nephrostomy tube 2 passing through the human body on the vertical plane.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A nephrostomy tube fixing device, characterized in that: Includes a belly band (5) that can be secured around the waist; Also includes; A cover body (6), wherein the cover body (6) is fixed on the abdominal band (5) and covers the position of the nephrostomy tube (2) passing through the human body through the opening (8) on the skin-contacting side. The cover body (6) also has a limiting hole (7) on the back skin side for maintaining the stability of the position of the nephrostomy tube (2) passing through the human body. A limiting protrusion (9) is fixedly mounted on the nephrostomy tube (2) and separates the nephrostomy tube (2) passing through the human body into a buffer section (202) and a connecting section (203) for connecting to a drainage bag. The diameter of the limiting protrusion (9) is larger than the diameter of the limiting hole (7) to prevent the buffer section (202) from passing through the limiting hole (7) and detaching from the cover body (6). The dorsal skin side of the cover body (6) is further connected to a limiting cap (13), the limiting hole (7) is provided on the limiting cap (13), the limiting cap (13) is connected to the cover body (6) via a spring (12), and the cover body (6) is provided with a through hole (16) at a position corresponding to the limiting cap (13), the diameter of the through hole (16) being larger than the diameter of the limiting protrusion (9); There is a distance between the position of the limiting hole (7) and the projection of the position where the nephrostomy tube (2) passes through the human body on the vertical plane.

2. A nephrostomy tube fixing device according to claim 1, characterized in that: The invention also includes a receiving layer (10) fixed on the abdominal band (5) and located on one side of the cover body (6), wherein the receiving layer (10) and the abdominal band (5) together define a receiving chamber for receiving part of the buffer section (202), and the receiving chamber is connected to the interior of the cover body (6) through a connecting hole (14) on the cover body (6).

3. A nephrostomy tube fixing device according to claim 1, characterized in that: The limiting protrusion (9) is integrally formed on the outer wall of the nephrostomy tube (2).

4. A nephrostomy tube fixing device according to claim 1, characterized in that: The limiting protrusion (9) is a protrusion adhered to the nephrostomy tube (2).

5. A nephrostomy tube fixing device according to claim 2, characterized in that: The side of the accommodating layer (10) facing away from the abdominal band (5) is detachably connected to a portion fixed to the abdominal band (5).

6. A nephrostomy tube fixing device according to claim 1, characterized in that: The two free ends of the abdominal band (5) are connected by means of Velcro, a hook or a buckle.

7. A nephrostomy tube fixing device according to claim 1, characterized in that: The buffer section (202) has a plurality of upper limit projections (9).

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