CN118750735A - A PICC catheter fixator - Google Patents

Abstract

The invention relates to the field of medical devices, and discloses a PICC catheter fixer, comprising a fixing belt for wrapping around a patient's upper arm, limiting pieces installed at both ends of the fixing belt, and tethers cross-installed on the limiting pieces. When the fixing belt completely wraps around the patient's upper arm, a gap gradually opens from top to bottom, and the gap exposes the biceps brachii of the patient's upper arm outside the fixing belt. The limiting pieces are arranged in an oblique line along the edge of the gap, and connecting pieces that are detachably connected to a connector and a fixing clip on a PICC catheter are fixedly arranged on both sides of the gap on the fixing belt. In this solution, a fixing belt is used to replace a traditional dressing, and the fixing belt is tightened by cooperating with a tether and a limiting piece, so as to solve the problem of easy skin allergy caused by traditional adhesive tape and adhesive.

Description

A PICC catheter fixator

Technical Field

The present invention relates to the field of medical devices, and in particular to a PICC catheter fixer.

Background Art

Peripherally inserted central catheter (PICC) is a catheter inserted into the vein of the arm. The catheter goes directly to the large vein close to the heart to avoid direct contact between chemotherapy drugs and the arm vein. In addition, the blood flow in the large vein is very fast, which can quickly dilute the chemotherapy drugs and prevent the drugs from irritating the blood vessels. Therefore, it can effectively protect the upper limb veins and reduce the occurrence of phlebitis. It is an important treatment method to relieve patients' pain and improve their quality of life.

PICC requires a thin and long catheter to be inserted into the patient's arm vein, as shown in Figure 1. In addition to the tube body, the catheter 1 also includes a connector 11 and a fixing clip 12, and then it is sent to the large vein near the heart. Under normal circumstances, the existing PICC catheter 1 can be used continuously for one year or longer, but the arm movement range cannot be too large or too violent during use to prevent the catheter 1 from falling off or breaking, so the patient's ordinary movements in daily life are restricted. The existing method of fixing the PICC catheter 1 is to fix the catheter 1 with a Slinglock, and then fix it on the patient's skin surface with a patch, but this method is not suitable for patients who are allergic to tape and adhesives, and there is a problem of easily causing skin allergies. In addition, if the disinfection is not strict, it is easy to cause infection and complications.

Summary of the invention

The present invention is intended to provide a PICC catheter fixer to solve the technical problem that the traditional method of fixing the PICC catheter is prone to cause skin allergies in patients.

In order to achieve the above object, the present invention adopts the following technical scheme:

A PICC catheter fixer comprises a fixing belt for wrapping around a patient's upper arm, limiting pieces installed at both ends of the fixing belt, and tethers cross-installed on the limiting pieces. When the fixing belt completely wraps around the patient's upper arm, a gap gradually opens from top to bottom, and the gap exposes the biceps brachii of the patient's upper arm outside the fixing belt. The limiting pieces are arranged in an oblique line along the edge of the gap. Connecting pieces that are detachably connected to a connector and a fixing clip on a PICC catheter are fixedly arranged on both sides of the gap on the fixing belt.

Invention concept: In order to solve the problem that the adhesive on the traditional dressing is easy to cause skin allergies in patients, the inventor first thought of using bandages in the form of Velcro, buckles, etc. to fix the PICC catheter. However, during the test wearing process, it was found that the solution had the following problems: first, the bandage is wrapped around the patient's upper arm in a ring shape, which has a strong tightening effect on the upper arm, resulting in difficulty in the patient's arm movement, such as difficulty in exerting force when doing simple actions such as raising a glass to drink water; second, the Velcro has a poor fixing effect and is easy to be torn apart, and the buckle-type straps are also prone to gradually loosen when worn for a long time. Therefore, the inventor did not use the common single-point detachable bandage. After thinking for a long time, he creatively proposed a cross-type multi-point detachable fixing strap using a tether and a limiter. Not only does it have a good fixing effect and is not easy to break free, but it also has excellent performance in terms of comfort after wearing.

Beneficial effects:

1. Using a fixing belt tightened by a tether and a limiter to replace the traditional dressing is suitable for patients who are allergic to adhesive tape and adhesives: only the fixing belt is in direct contact with the patient's skin, and it does not contain adhesives and other ingredients that are likely to induce skin allergies, and the tightness of the fixing belt can be freely adjusted using the tether.

2. Good fixation effect and coordinated with the patient's elbow bending movement: multiple limiters are set to cooperate with the cross-installed tethers to tighten and fix the two ends. The multi-point fixation method allows the fixation belt to completely fit the patient's upper arm skin. At the same time, due to the reserved notch on the fixation belt, the restraint effect of the fixation belt on the biceps brachii when the patient bends the elbow is not so strong, and it is easy to exert force, taking into account the comfort of the patient when wearing the fixator for a long time.

3. After the catheter is placed, the patient's upper arm movement is restricted to a certain extent: after the catheter is placed, the patient's arm cannot lift heavy objects, blood pressure cannot be measured on the arm with the catheter, the arm cannot shake spontaneously, etc. After the fixation belt is fitted to the patient's upper arm, it has a good fixation effect on the patient's upper arm when performing activities beyond the degree of simple elbow bending. The complete coverage of the fixation belt also makes it impossible to perform blood pressure measurement, and can also reduce the patient's arm shaking.

Preferably, as an improvement, the limiting member includes a mounting buckle with a through groove formed on the bottom surface fixedly arranged on the outer surface of the fixing belt, a mounting hole for the tether to pass through is formed on the mounting buckle, a pressure buckle for fixing the tether is rotatably arranged on a surface of the mounting buckle opposite to the through groove, and a clamping member for plug-in cooperation with the mounting buckle is fixedly arranged on the end of the pressure buckle away from the rotatable connection with the mounting buckle.

Beneficial effects: The tether passed through the mounting buckle is fixed in stages through the plug-in cooperation of the clamping piece and the mounting buckle, ensuring that both ends of the fixing belt are tightened to fit the upper arm surface skin, with a good fixing effect.

Preferably, as an improvement, the snap-on component includes an elastic plate fixedly connected to the end of the buckle along a vertical direction of the buckle, and a plug buckle fixedly arranged on the end of the elastic plate away from the buckle along a direction parallel to the buckle, and the plug buckle is plugged into a slot provided on the mounting buckle.

Beneficial effect: The bending deformation of the elastic plate is used to control the insertion buckle to achieve plug-in cooperation with the card slot, so as to close the buckle and limit the movement of the tether by the buckle, which is conducive to the stability of the patient when wearing the fixing belt.

Preferably, as an improvement, a disassembly opening connected to the card slot is fixedly provided on the mounting buckle.

Beneficial effect: The purpose of setting the disassembly port is to facilitate medical personnel to use tools such as tweezers or levers to reach into the card slot to pry the buckle, so that the buckle can be separated from the fixed restriction of the card slot and open the buckle to achieve the purpose of loosening the tether, and the operation is simple.

Preferably, as an improvement, the connecting member includes a mounting plate with a threaded hole fixedly disposed on the fixing belt, and a screw threadably connected to the mounting plate.

Beneficial effects: The stability of the connection between the fixing belt and the connector and the fixing clip on the PICC catheter is related to the safety of the patient. If common easily detachable connectors such as Velcro and buttons are used, the patient or bystanders may easily pull the PICC catheter off the fixing belt if they are not careful, and the removal of small screws requires a special screwdriver tool. This solution ensures the stability of the connection of the PICC catheter on the fixing belt.

Preferably, as an improvement, airbags with inflation and deflation functions are installed inside the top and bottom edges of the fixing belt.

Beneficial effect: By injecting gas into the airbag in the fixing belt, fixed-point pressure is applied to the skin on the patient's upper arm that touches the top and bottom edges of the fixing belt, which helps prevent the fixing belt from slipping during long-term wear and improves the fixing effect.

Preferably, as an improvement, the limiting member is configured as a C-shaped elastic member as a whole, and a limiting groove for the tether to pass through and a fixing groove for fixing the tether are respectively provided on the limiting member, and the limiting groove and the fixing groove are connected.

Beneficial effect: The C-shaped limiter has a simple shape, and the limit slot and the fixing slot can effectively fix each section of the tether, which is beneficial to reduce

Preferably, as an improvement, the limiting member is a knob, both ends of the tether are fixedly connected to the fixing belt, and the knob is used to adjust the middle position of the tether.

Beneficial effects: The knob is a commonly used adjustment part for adjusting the tightness of the tether, and it is easy to operate. After the catheter is placed, the patient can adjust it under the guidance of medical staff according to the daily arm activity needs to improve the comfort of long-term wearing of the fixation belt.

Preferably, as an improvement, the fixing belt is made of antibacterial fiber and has a plurality of micro holes for air permeability.

Beneficial effects: The fixing strap made of antibacterial fiber and the micropores can reduce odor and bacterial growth, keep the patient's skin surface clean and hygienic, and is suitable for patients to wear the fixator for a long time.

Preferably, as an improvement, the tether is made of carbon fiber material.

Beneficial effects: The tether is woven from fibers composed of carbon elements, has high strength and modulus along the fiber axis, good wear resistance and light texture.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front view of a first embodiment of the present invention;

FIG2 is an isometric view of the stopper in FIG1 ;

FIG3 is an enlarged schematic diagram of point A in FIG2 ;

FIG4 is an enlarged schematic diagram of point B in FIG2 ;

FIG5 is a front view of a second embodiment of the present invention;

FIG6 is a cross-sectional view of the airbag portion in FIG5 ;

FIG7 is a schematic diagram of the structure of a position-limiting member in Embodiment 3 of the present invention;

FIG8 is a front view of a fourth embodiment of the present invention;

FIG9 is an enlarged schematic diagram corresponding to FIG3 in Embodiment 5 of the present invention;

FIG. 10 is a cross-sectional view of the mounting buckle portion in the fifth embodiment of the present invention.

DETAILED DESCRIPTION

The following is further described in detail through specific implementation methods:

The figure marks in the drawings of the specification include: catheter 1, connector 11, fixing clip 12, fixing belt 2, first fixing belt 21, second fixing belt 22, airbag 23, air port 231, limiting member 3, mounting buckle 31, through slot 311, mounting hole 312, groove 313, card slot 314, disassembly port 315, press buckle 32, elastic plate 33, insert buckle 34, limiting slot 35, fixing slot 36, knob 37, rubber layer 38, tether 4, notch 5, mounting plate 6, screw 7.

Embodiment 1

As shown in Figures 1-4, a PICC catheter 1 fixer includes a fixing belt 2 for wrapping around the patient's upper arm, limiters 3 installed at both ends of the fixing belt 2, and tethers 4 cross-mounted on the limiters 3; the tethers 4 are made of carbon fiber material, and their function is to tighten the two ends of the fixing belt 2 to wrap the upper arm. For the convenience of explanation, the fixing belt 2 is divided into an integrally formed first fixing belt 21 located at the left end as shown in Figure 1 and a second fixing belt 22 at the right end.

The thickness of the fixing belt 2 is 2 mm. When the fixing belt 2 completely wraps the patient's upper arm, a gap 5 is formed between the first fixing belt 21 and the second fixing belt 22, which gradually opens from top to bottom, that is, from the patient's upper arm to the forearm. As shown in FIG. 1, the gap 5 is in a triangular shape that is narrow at the top and wide at the bottom. The gap 5 allows the biceps of the patient's upper arm to not be completely restrained by the fixing belt 2 when exerting force, so that the force can be exerted more easily; connectors that are detachably connected to the connector 11 and the fixing clip 12 on the PICC catheter 1 are fixedly arranged on both sides of the gap 5 on the fixing belt 2. In this embodiment, the connector is a 2 mm thick mounting sheet 6 bonded to the outer surface of the fixing belt 2. A threaded hole is provided on the mounting sheet 6. A screw 7 with a length of 1 mm is used to thread the two sides of the connector 11 on the PICC catheter 1 and the two sides of the fixing clip 12 with the threaded hole, respectively. Connection, in other embodiments, the connector 11 and the fixing clip 12 can be respectively connected to the fixing belt 2 by bonding; the limiter 3 is arranged in an oblique line along the edge of the notch 5. In this embodiment, the limiter 3 includes 3 groups as shown in Figure 1, each group includes 2 limiters 3 respectively installed on the first fixing belt 21 and the second fixing belt 22 and symmetrical to each other, and the tether 4 is cross-installed on the limiter 3 with reference to the tying method of shoelaces. Note that the end of the tether 4 on the lower side is directly fixedly connected to the fixing belt 2. In this embodiment, hot melt adhesive can be used to fix the end of the tether 4 and the fixing belt 2 by bonding; the fixing belt 2 is made of antibacterial fiber material, and has a number of micropores for ventilation, which ensures the comfort of the patient when wearing the fixator for a long time and reduces bacterial growth.

The limiting member 3 in this embodiment is shown in Figures 2 to 4, and includes a mounting buckle 31 bonded and fixed to the outer surface of the fixing belt 2, a through groove 311 is horizontally arranged on the side of the mounting buckle 31 close to the fixing belt 2, a mounting hole 312 for the tether 4 to pass through is opened on the central axis of the mounting buckle 31, a groove 313 and a buckle 32 for fixing the tether 4 rotatably arranged in the groove 313 are opened on the side of the mounting buckle 31 opposite to the through groove 311, and the buckle 32 is arranged vertically, that is, it is perpendicular to the setting direction of the through groove 311, and a clamping member is fixedly arranged on the buckle 32 away from the end rotatably connected to the mounting buckle 31; in this embodiment, the clamping member includes an end of the buckle 32 along the buckle 32 The elastic plate 33 is fixedly connected in the vertical direction, and the plug buckle 34 is fixedly arranged on the elastic plate 33 at one end away from the buckle 32 in a direction parallel to the buckle 32. The whole card connector is made of plastic. The cross section of the elastic plate 33 is an arc-shaped part bent in the direction of the mounting hole 312. A slot 314 with a length smaller than the plug buckle 34 is provided on the mounting buckle 31 facing the groove 313, and the plug buckle 34 and the slot 314 are detachably connected by plugging. A disassembly opening 315 connected to the slot 314 is fixedly arranged on one side of the mounting buckle 31 on which the buckle 32 is installed. The elastic plate 33 can be moved to open the buckle 32 with the help of auxiliary tools such as a lever, so as to release the fixed restriction on the tether 4.

The actual application process is as follows:

When in use, ensure that each section of the tether 4 is not restricted by the limiting member 3, so that the fixing belt 2 can be unfolded as a whole and placed on the bed, and then let the patient lie flat on the bed in a supine position, and let the patient's upper arm be placed in the wrapped range of the fixing belt 2, then pull up the first fixing belt 21 and the second fixing belt 22 so that the inner surface of the fixing belt 2 is wrapped as a whole and basically fits the patient's upper arm, and then install the tether 4 on the limiting member 3 in a cross shape as shown in Figure 1; the specific installation process of the tether 4 and the limiting member 3 is to first ensure that the buckle 32 is in an open state, and then insert the tether 4 from the through groove 311 at the bottom of the mounting buckle 31 into the mounting hole 312 and from the groove 3 13 is extended out, and then the tether 4 extending from the groove 313 is tightened, so that the fixing belt 2 can completely fit the skin on the upper arm surface, and then the buckle 32 is pressed down in the direction indicated by the arrow shown in Figure 1, so that one end of the buckle 34 on the buckle 32 is inserted into the card slot 314, so that the buckle 32 fixes the tether 4 in stages. Similarly, when all sections of the tether 4 are restricted and fixed by the limiter 3, that is, the fixing belt 2 completely wraps the patient's upper arm, a gap 5 is formed between the first fixing belt 21 and the second fixing belt 22, which gradually opens from the upper arm of the patient to the forearm, ensuring that the patient can use the biceps brachii to exert force calmly when doing arm movements such as elbow flexion.

Then, the PICC catheter 1 is installed on the fixing belt 2 as shown in Figure 1. Specifically, the connector 11 on the PICC catheter 1 is fixed to the mounting plate 6 on the first fixing belt 21 by screws 7, and the fixing clip 12 on the PICC catheter 1 is fixed to the mounting plate 6 on the second fixing belt 22 by screws 7. At this time, the outlet of the connector 11 is in the opposite direction to the outlet of the fixing clip 12. The catheter 1 extending out of the outlet of the fixing clip 12 passes through the surface of the patient's skin and extends into the vein on the upper arm to reach the large vein near the heart to complete the catheterization. Note that when inserting the PICC catheter 1, the patient's skin must be pierced with a puncture needle to reach the vein directly. The area corresponding to the puncture on the fixing belt 21 needs to be cut open with scissors in advance to reserve operating space.

After the catheter is placed, there may be some tenderness at the site of the arm where the catheter 1 is inserted, but this tenderness should disappear within a few days. During this period, you should be careful not to lift heavy objects with your arm, do not measure blood pressure on the arm where the catheter 1 is inserted, avoid doing actions that cause the arm to vibrate, etc. At this time, the protective and restraining effect of the fixing belt 2 used to replace the dressing and fixing of the PICC catheter 1 on the arm is reflected. The fixing belt 2 fits perfectly with the patient's upper arm but exposes the biceps brachii through the notch 5, which ensures the patient's composure in doing ordinary elbow bending actions in daily life and limits excessive activity of the upper arm.

When it is necessary to remove the catheter 1 and take the fixer off the patient, after removing the catheter 1 from the patient's body, first loosen the screw 7 to remove the connector 11 and the fixing clip 12, then use tweezers or a lever to reach into the removal opening 315 to contact the edge of the buckle 34 and forcefully push the buckle 34 toward the mounting hole 312, so that the buckle 34 is free from the restriction of the slot 314 to open the buckle 32, and pull the tether 4 out of the through slot 311. When all sections of the tether 4 are released from the limiter 3, the fixing belt 2 can be fully unfolded, and finally the entire fixer is removed.

Embodiment 2

The difference between this embodiment and the first embodiment is that, as shown in FIG. 5 and FIG. 6 , an airbag 23 with inflation and deflation functions is installed inside the fixing belt 2 and at the top and bottom edges thereof, and at least two air ports 231 are reserved on the airbag 23 for inflation and deflation.

By injecting gas into the airbag 23, pressure is applied to the skin on the patient's upper arm that touches the top and bottom edges of the fixing belt 2, which helps prevent the fixing belt 2 from slipping when worn for a long time and achieves a better fixing effect.

Embodiment 3

The difference between this embodiment and the first embodiment lies in that, as shown in FIG. 7 , the limiting member 3 is integrally configured as a C-shaped plastic member, and a limiting groove 35 for the tether 4 to pass through and a fixing groove 36 for fixing the tether 4 are respectively provided on the limiting member 3, the limiting groove 35 and the fixing groove 36 are connected, and the diameter of the fixing groove 36 is smaller than the diameter of the tether 4, so that the tether 4 can be fixed in the fixing groove 36.

This embodiment discloses another implementation method of the limiter 3, which has a simple structure and low manufacturing cost.

Embodiment 4

The difference between this embodiment and the first embodiment lies in that, as shown in FIG8 , the limit member 3 uses a knob 37, and both ends of the tether 4 are fixedly connected to the fixing belt 2. The knob 37 is used to adjust the middle position of the tether 4, that is, the middle section of the tether 4 is fixed inside the knob 37 in a spiral manner. By manually rotating the knob 37, the length of the middle section of the tether 4 exposed outside the knob 37 can be adjusted, thereby achieving the effect of adjusting the tightness of the fixing belt 2 wrapped around the upper arm. The patient can adjust it by himself, and the operation is very convenient. The knob 37 involved in this embodiment belongs to the prior art and will not be repeated here.

Embodiment 5

The difference between this embodiment and the first embodiment lies in that, as shown in Figures 9 and 10, a flexible rubber layer 38 is bonded and fixed to the bottom of the elastic plate 33, and an anti-slip pattern is fixedly provided on the bottom surface of the rubber layer 38, and the mounting buckle 31 is designed as an I-shaped structure as a whole and is bonded and fixed to the fixing belt 2; when it is necessary to fix the tether 4, after pressing the elastic plate 33, the buckle 34 is inserted into the card slot 314 to clamp and fix the tether 4, and at the same time, the rubber layer 38 at the bottom of the elastic plate is in close contact with the skin, so that it has an anti-slip function, further improving the fixing and anti-slip effect of the entire fastener.

The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and/or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims (10)

1. A PICC catheter holder, characterized in that it comprises a fixing belt for wrapping around a patient's upper arm, limiting pieces installed at both ends of the fixing belt, and tethers cross-mounted on the limiting pieces, wherein when the fixing belt completely wraps around the patient's upper arm, a gap gradually opening from top to bottom is formed, and the gap exposes the biceps brachii of the patient's upper arm outside the fixing belt, the limiting pieces are arranged in an oblique line along the edge of the gap, and connecting pieces are fixedly arranged on both sides of the gap on the fixing belt, which are detachably connected to the connector and the fixing clip on the PICC catheter. 2. A PICC catheter holder according to claim 1, characterized in that: the limiting member includes a mounting buckle with a through groove formed on the bottom surface fixedly arranged on the outer surface of the fixing belt, a mounting hole for the tether to pass through is formed on the mounting buckle, a buckle for fixing the tether is rotatably arranged on a surface of the mounting buckle opposite to the through groove, and a clamping member for plugging and fitting with the mounting buckle is fixedly arranged on the end of the buckle away from the rotatable connection with the mounting buckle. 3. A PICC catheter holder according to claim 2, characterized in that: the clamping part includes an elastic plate fixedly connected to the end of the buckle along the vertical direction of the buckle, and a plug buckle fixedly arranged on the end of the elastic plate away from the buckle along the direction parallel to the buckle, and the plug buckle is plugged into a slot opened on the mounting buckle. 4. A PICC catheter holder according to claim 3, characterized in that a disassembly port connected to the card slot is fixedly provided on the mounting buckle. 5. A PICC catheter holder according to claim 4, characterized in that the bottom end of the tether is fixedly connected to the fixing belt. 6. A PICC catheter holder according to claim 5, characterized in that: air bags with inflation and deflation functions are installed inside the top and bottom edges of the fixing belt. 7. A PICC catheter holder according to claim 1, characterized in that: the limiting member is configured as a C-shaped elastic member as a whole, and a limiting groove for the tether to pass through and a fixing groove for fixing the tether are respectively provided on the limiting member, and the limiting groove and the fixing groove are connected. 8. A PICC catheter holder according to claim 1, characterized in that: the limiting member is a knob, both ends of the tether are fixedly connected to the fixing belt, and the knob is used to adjust the middle position of the tether. 9. A PICC catheter fixer according to any one of claims 1 to 8, characterized in that the fixing band is made of antibacterial fiber and has a plurality of micro holes for air permeability. 10. The PICC catheter holder according to claim 9, characterized in that the tether is made of carbon fiber material.