Knee joint postoperative pressurizing device

Abstract

The utility model discloses a knee joint postoperative pressurizing device which comprises three pressurizing mechanisms and a popliteal space protection mechanism, the three pressurizing mechanisms pressurize the thigh side, the knee joint and the shank side respectively, each pressurizing mechanism comprises an air bag layer, a cold compress layer and a contact layer from outside to inside, and each air bag layer comprises an external wrapping cover and an internal air bag set. The air bag sets are composed of a plurality of air bags arranged in parallel and first communicating pipes, the length direction of the air bags is consistent with the direction of the legs of the patient, the air bags are communicated through the first communicating pipes, the air bag sets of every two adjacent pressurizing mechanisms are communicated through a second communicating pipe, and at least one air bag set is provided with a one-way air inlet valve and a pressure release valve. According to the knee joint postoperative pressurizing device, the air bag is adopted for postoperative compression, applied pressure can be conveniently controlled, and nerve and blood vessels at popliteal fossa are protected through the upper supporting plate and the lower supporting plate which are hinged to each other, so that damage during compression is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary devices, in particular to a pressurizing device after knee joint surgery. Background Art

[0002] Knee replacement surgery is an effective treatment for end-stage joint damage. Doctors will use gauze bandages or elastic bandages for postoperative compression to stop bleeding.

[0003] The current use of gauze bandages or elastic bandages for postoperative compression has the following disadvantages: (1) The pressure value of the pressure bandage cannot be estimated, and the pressure is applied based solely on the bandager's previous experience and feel; (2) Due to the particularity of the knee joint's anatomical structure, the popliteal fossa is rich in nerves and blood vessels and is superficial, making it very easy for complications to occur after compression, and in severe cases there is even a risk of disability; (3) Traditional gauze bandages or elastic bandages affect the patient's knee flexion and cause great discomfort to the patient.

[0004] Therefore, in view of the above shortcomings, it is necessary to develop a scientific, safe and comfortable knee joint postoperative compression device. Utility Model Content

[0005] 1. Technical problems to be solved:

[0006] In view of the above technical problems, the utility model provides a postoperative pressurization device for knee joint.

[0007] 2. Technical solution:

[0008] A postoperative pressurization device for knee joint surgery comprises three pressurization mechanisms and a popliteal fossa protection mechanism. The three pressurization mechanisms pressurize the thigh side, the knee joint and the calf side respectively. The pressurization mechanisms are respectively an airbag layer, a cold compress layer and a contact layer from the outside to the inside. The airbag layer comprises an external covering cover and an internal airbag group. The airbag group consists of a plurality of airbags arranged in parallel and a first connecting tube. The length direction of the airbags is consistent with the direction of the patient's legs. The plurality of airbags are connected through the first connecting tube. The airbag groups of two adjacent pressurization mechanisms are connected through a second connecting tube. A one-way air inlet valve and a pressure relief valve are provided on at least one airbag group. Locking mechanisms are provided at both ends of the covering cover. The entire pressurization device is wrapped around the leg and the knee joint through the locking mechanism. The cold compress layer is locked at the back; the cold compress layer includes a plurality of pockets, which are sewn on one side of the cover close to the leg or knee joint, and an ice pack is placed in the pocket. The pocket is provided with an opening, and a sealing strip is provided on the opening. The contact layer is a cloth piece with moisture absorption and perspiration wicking properties, which is sewn on one side of the pocket close to the leg or knee joint. The popliteal fossa protection mechanism includes an upper support plate and a lower support plate, which are both arc-shaped structures and can be worn on the back of the thigh and the back of the calf respectively. The upper support plate and the lower support plate are hinged, and the hinge points are located on both sides of the legs and at a distance from the legs. In addition, the upper support plate and the lower support plate are provided with notches at the positions opposite to the popliteal fossa; the upper support plate and the lower support plate are worn on the legs through a fixing mechanism.

[0009] Furthermore, the one-way air inlet valve is arranged on the airbag group of the knee joint side pressurizing mechanism, and a pressure relief valve is arranged on the airbag group of each pressurizing mechanism. A one-way valve core is installed in the second connecting tube to maintain one-way conduction from the airbag group of the knee joint side pressurizing mechanism to the airbag group of the thigh side pressurizing mechanism, and from the airbag group of the knee joint side pressurizing mechanism to the airbag group of the calf side pressurizing mechanism.

[0010] Furthermore, one-way air inlet valves are also provided on the air bag groups of the thigh-side and calf-side pressurizing mechanisms.

[0011] Furthermore, the covering covers of adjacent pressurizing mechanisms are fixedly connected by sewn connecting strips or movably connected by buckles or Velcro.

[0012] Furthermore, the locking mechanism is one of a Velcro connection structure and a snap connection structure.

[0013] Furthermore, the fixing mechanism includes an elastic knee sleeve, the inner side of which is fixedly connected to the back side of the popliteal fossa protection mechanism and covers the popliteal fossa protection mechanism. The popliteal fossa protection mechanism is worn on the leg through the elastic knee sleeve, and wear-resistant and smooth leather layers are provided on both sides of the inside of the elastic knee sleeve. The leather layer is arranged relative to the hinge point of the upper support plate and the lower support plate, and the hinge point maintains contact with the leather layer when it moves back and forth with the movement of the knee joint.

[0014] Furthermore, silicone pads are provided at the contact points between the upper support plate, the lower support plate and the legs.

[0015] Furthermore, the postoperative knee joint compression device is fixed at a position 10 cm above the patella from the patient's ankle.

[0016] 3. Beneficial effects:

[0017] The utility model discloses a postoperative knee joint pressurization device which uses an air bag for postoperative compression, and is convenient for controlling the applied pressure. It adopts a three-stage design, and compresses the thigh side, the calf side and the knee joint respectively. A popliteal fossa protection mechanism is arranged at the corresponding position of the popliteal fossa. The nerves and blood vessels at the popliteal fossa are protected by a hinged upper support plate and a lower support plate to avoid damage during compression. The hinged manner can ensure the flexion of the knee joint, and improve the comfort of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the postoperative knee joint compression device of the utility model;

[0019] Figure 2 This is a cross-sectional view of the pressurizing mechanism of the utility model;

[0020] Figure 3 This is a side view of the utility model when the compression device after knee joint surgery is fixed on the leg;

[0021] Figure 4 This is a back view of the popliteal fossa protection mechanism of the utility model when it is fixed on the leg;

[0022] Figure 5 This is a cross-sectional view of the popliteal fossa protection mechanism of the utility model. DETAILED DESCRIPTION

[0023] The utility model is described in detail below in conjunction with the accompanying drawings.

[0024] As attached Figure 1 To Attachment Figure 5 As shown,

[0025] Specific embodiment: A postoperative pressurization device for knee joint, comprising three pressurization mechanisms 1 and a popliteal fossa protection mechanism 2, wherein the three pressurization mechanisms 1 respectively pressurize the thigh side, the knee joint side and the calf side, wherein the pressurization mechanisms 1 respectively comprise an airbag layer 1-1, a cold compress layer 1-2 and a contact layer 1-3 from outside to inside, wherein the airbag layer 1-1 comprises an outer covering cover 1-11 and an inner airbag group 1-12, wherein the airbag group 1-12 comprises a plurality of airbags arranged in parallel and a first connecting tube, wherein the length direction of the airbags is consistent with the direction of the patient's legs, wherein the plurality of airbags are connected by the first connecting tube, and two adjacent pressurization mechanisms The airbag groups 1-12 of 1 are connected through the second connecting pipe 3, and at least one of the airbag groups 1-12 is provided with a one-way air inlet valve 4 and a pressure relief valve 5; locking mechanisms are provided at both ends of the covering cover 1-11, and the entire pressurizing device is locked after being wrapped around the leg and the knee joint; the cold compress layer 1-2 includes a plurality of pockets 1-21, the pockets 1-21 are sewn on one side of the covering cover 1-11 close to the leg or the knee joint, an ice pack is placed in the pockets 1-21, an opening is provided on the pockets 1-21, and a sealing strip is provided on the opening; the contact layer 1-3 is a cloth piece with moisture absorption and perspiration wicking properties, and the cloth piece is sewn The popliteal fossa protection mechanism 2 is made on the side of the pocket 1-21 close to the leg or knee joint. The upper support plate 2-1 and the lower support plate 2-2 are both arc-shaped structures and can be worn on the back of the thigh and the back of the calf respectively. They are made according to ergonomic requirements. The upper support plate 2-1 and the lower support plate 2-2 are hinged, and the hinge point 2-3 is located on both sides of the leg and a distance away from the leg. In addition, the upper support plate 2-1 and the lower support plate 2-2 are provided with a notch 2-4 at the position opposite to the popliteal fossa, and specifically, the two corresponding ends of the notch 2-4 are hinged. The hinge points are located on both sides of the legs to avoid interference during knee flexion. In addition, two notches 2-4 are provided to prevent the upper support plate and the lower support plate from compressing the nerves and blood vessels in the popliteal fossa during knee flexion. Preferably, the plate bodies at the two ends that are far away from each other near the upper support plate 2-1 and the lower support plate 2-2 are in contact with the legs to maintain a supporting effect; the closer the upper support plate and the lower support plate are to the popliteal fossa, the greater the gap between the plate bodies and the legs, which can better prevent the upper support plate and the lower support plate from compressing the nerves and blood vessels in the popliteal fossa during knee flexion. The upper support plate 2-1 and the lower support plate 2-2 are worn on the legs through a fixing mechanism.

[0026] The one-way air inlet valve 4 is arranged on the airbag group 1-12 of the knee joint side pressurizing mechanism 1, and a pressure relief valve 5 is arranged on the airbag group 1-12 of each pressurizing mechanism 1. A one-way valve core is installed in the second connecting pipe 3 to keep the one-way conduction from the airbag group 1-12 of the knee joint side pressurizing mechanism 1 to the airbag group 1-12 of the thigh side pressurizing mechanism 1, and the one-way conduction from the airbag group 1-12 of the knee joint side pressurizing mechanism 1 to the airbag group 1-12 of the calf side pressurizing mechanism 1. The one-way valve core can be arranged to keep the airbags of the knee joint side pressurizing mechanism 1 inflated, and the airbags of the thigh side and calf side pressurizing mechanisms 1 can be inflated at the same time. When the airbag gas of the knee joint side pressurizing mechanism 1 is released through the pressure relief valve 5, the knee joint can be freely moved. At this time, the airbags of the thigh side and calf side pressurizing mechanisms 1 still maintain a compressed state.

[0027] The airbag groups 1-12 of the thigh-side and calf-side pressurizing mechanisms 1 are also provided with one-way air inlet valves 4. The airbags of the thigh-side and calf-side pressurizing mechanisms 1 can be inflated separately.

[0028] The covering covers 1-11 of adjacent pressurizing mechanisms 1 are fixedly connected by sewn connecting strips or movably connected by buckles or Velcro, thereby ensuring the mobility of several squeezing mechanisms at the connection, improving the flexibility of knee flexion movement, and ensuring comfort.

[0029] The locking mechanism is one of a Velcro connection structure and a buckle connection structure.

[0030] The fixing mechanism includes an elastic knee sleeve 5, the inner side of which is fixedly connected to the back side of the popliteal fossa protection mechanism 2 and covers the popliteal fossa protection mechanism 2. The popliteal fossa protection mechanism 2 is worn on the leg through the elastic knee sleeve 5. Wear-resistant and smooth leather layers 6 are also provided on both sides of the inside of the elastic knee sleeve 5. The leather layer 6 is arranged relative to the hinge point 2-3 of the upper support plate 2-1 and the lower support plate 2-2. The hinge point 2-3 maintains contact with the leather layer 6 when it moves back and forth with the knee joint.

[0031] Silicone soft pads are provided at the contact points between the upper support plate 2-1 and the lower support plate 2-2 and the legs to avoid friction damage to the skin.

[0032] The postoperative knee joint pressurization device of the utility model is fixed at a position 10 cm above the patella from the ankle of the patient. First, the elastic knee sleeve is worn on the knee joint, the positions of the upper support plate 2-1 and the lower support plate 2-2 are adjusted, and then the three pressurization mechanisms 1 are locked on the leg through Velcro or buckles, and air is inflated into the airbag to compress and stop bleeding on the thigh side, knee joint side and calf side respectively. An ice bag can also be placed in the pocket 1-21 for cold compress. Due to the use of the popliteal fossa protection mechanism 2, the airbag will not directly compress the nerves and blood vessels in the popliteal fossa when inflated, but directly press on the two support plates. In addition, the upper support plate and the lower support plate fixed by hinges will not hinder knee flexion. If the knee joint needs to be moved, the airbag at the knee joint can be deflated separately.

[0033] Although the present invention has been disclosed as above in terms of preferred embodiments, they are not intended to limit the present invention. Anyone skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection defined by the claims of this application.

Claims

1. A postoperative knee joint compression device, characterized in that: The invention comprises three pressurizing mechanisms and a popliteal fossa protection mechanism. The three pressurizing mechanisms pressurize the thigh side, the knee joint and the calf side respectively. The pressurizing mechanisms are respectively an airbag layer, a cold compress layer and a contact layer from the outside to the inside. The airbag layer comprises an external covering cover and an internal airbag group. The airbag group consists of a plurality of airbags arranged in parallel and a first connecting tube. The length direction of the airbags is consistent with the direction of the patient's legs. The plurality of airbags are connected through the first connecting tube. The airbag groups of two adjacent pressurizing mechanisms are connected through the second connecting tube. At least one airbag group is provided with a one-way air inlet valve and a pressure relief valve. Locking mechanisms are provided at both ends of the covering cover. The entire pressurizing device is locked after being wrapped around the leg and the knee joint. The cold compress layer includes a plurality of pockets, which are sewn on one side of the cover close to the leg or knee joint, and an ice pack is placed in the pocket. The pocket is provided with an opening, and a sealing strip is provided on the opening. The contact layer is a cloth piece with moisture absorption and perspiration wicking properties, which is sewn on one side of the pocket close to the leg or knee joint. The popliteal fossa protection mechanism includes an upper support plate and a lower support plate, which are both arc-shaped structures and can be worn on the back of the thigh and the back of the calf respectively. The upper support plate and the lower support plate are hinged, and the hinge points are located on both sides of the legs and at a distance from the legs. In addition, the upper support plate and the lower support plate are provided with notches at the positions opposite to the popliteal fossa; the upper support plate and the lower support plate are worn on the legs through a fixing mechanism.

2. A postoperative knee joint compression device according to claim 1, characterized in that: The one-way air inlet valve is arranged on the airbag group of the knee joint side pressurizing mechanism, and a pressure relief valve is arranged on the airbag group of each pressurizing mechanism. A one-way valve core is installed in the second connecting pipe to maintain one-way conduction from the airbag group of the knee joint side pressurizing mechanism to the airbag group of the thigh side pressurizing mechanism, and from the airbag group of the knee joint side pressurizing mechanism to the airbag group of the calf side pressurizing mechanism.

3. A postoperative knee joint compression device according to claim 2, characterized in that: The air bag groups of the thigh-side and calf-side pressurizing mechanisms are also provided with one-way air inlet valves.

4. A postoperative knee joint compression device according to any one of claims 1 to 3, characterized in that: The covering covers of adjacent pressurizing mechanisms are fixedly connected by sewn connecting strips or movably connected by buckles or Velcro.

5. A postoperative knee joint compression device according to claim 4, characterized in that: The locking mechanism is one of a Velcro connection structure and a buckle connection structure.

6. A postoperative knee joint compression device according to claim 5, characterized in that: The fixing mechanism includes an elastic knee sleeve, the inner side of which is fixedly connected to the back side of the popliteal fossa protection mechanism and covers the popliteal fossa protection mechanism. The popliteal fossa protection mechanism is worn on the leg through the elastic knee sleeve. Wear-resistant and smooth leather layers are also provided on both sides of the inner side of the elastic knee sleeve. The leather layer is arranged relative to the hinge point of the upper support plate and the lower support plate, and the hinge point maintains contact with the leather layer when it moves back and forth with the movement of the knee joint.

7. A postoperative knee joint compression device according to claim 6, characterized in that: Silicone soft pads are provided at the contact points between the upper support plate, the lower support plate and the legs.

8. A postoperative knee joint compression device according to claim 7, characterized in that: The postoperative compression device for knee joint is fixed at a position 10 cm above the patella from the ankle of the patient.

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