Wound opening assembly for spinal surgery

Abstract

The invention provides a window opening assembly for spinal surgery, which comprises an elastic plate, the elastic plate is connected with a traction piece, the traction piece is connected with one end of an elastic clamp, the elastic clamp is connected with a compression piece, and the outer surface of the compression piece is sleeved with a wall layer. The elastic clamp, the skin surface of the knife edge on one side and the stripping face form a pre-tightening force wall layer, the inner wall of the pre-tightening force wall layer and the outer surface of the pressing piece define a pressing cavity, the side face of the pressing cavity and the stripping face form pre-tightening force, and the stripping face, pressed by the pressing piece, on the outer side of the spinal operation forms outward pulling force through the elastic system of the elastic plate and the elastic clamp and the stress dispersing effect of the buffering piece. The thickness of the compression part is gradually narrowed, the contour of the compression part is in the shape of an inverted triangle, the lower end of the compression part can be placed in the deep position of the stripping face under the condition that the stripping face is small, the stripping face is further compressed, the operation visual field can be fully exposed, the stripping face is compressed, and the bleeding tendency of the stripping face is reduced. And the conditions of unclear operation view and severe bleeding are avoided.

Description

Technical Field

[0001] The invention belongs to the field of surgical instruments, and in particular relates to a wound distraction assembly for spinal surgery. Background Art

[0002] Spinal surgery is a type of surgery that treats various spinal diseases. The surgical sites include the cervical spine, thoracic spine, lumbar spine, etc. The surgery is performed by cutting through the patient's skin and muscle tissue and directly entering the patient's bone structure.

[0003] Minimally invasive spinal surgery: Using minimally invasive surgical techniques, such as endoscopic technology and perforaminal endoscopic technology, to perform surgical operations through smaller incisions and channels can significantly reduce the scope of fenestration and dissection, reduce surgical trauma and postoperative recovery time, reduce trauma and damage to surrounding tissues, and shorten the patient's recovery time and hospitalization time.

[0004] Spinal surgery retractors are a commonly used surgical instrument in spinal surgery. Among them, lamina retractors are mainly used to expose the surgical field, make the surgery easier, and protect tissues to avoid accidental damage. It can also be used to strip, retract or cover nerve roots in orthopedic surgery.

[0005] However, existing spinal surgical retractors often require surgical personnel to manually pull to ensure that the surgical field of view is not blocked. At the same time, in order to fully expose the surgical field of view, the surgical window area and the peeling surface are large. A large surgical window area will slow wound healing, increase the risk of infection, and prolong recovery time. During surgical peeling, excessive bleeding on the peeling surface will cause the surgical area to be infiltrated with blood, resulting in unclear vision and increased bleeding. Therefore, a new technology is needed to improve this phenomenon. Summary of the invention

[0006] In response to the above-mentioned problems in the prior art, the present invention provides a window opening assembly for spinal surgery, which does not require additional operator traction, has a small window opening area and a small peeling surface, and the surgical field of view can be fully exposed. The peeling surface is compressed to avoid unclear surgical field of view, increased bleeding, and the like.

[0007] The present invention is implemented by the following technical scheme: a window opening assembly for spinal surgery, comprising an elastic plate, the elastic plate is arranged in a transverse manner, and traction members are respectively connected to the two ends of the upper surface of the elastic plate, the traction member and the plate body of the elastic plate are in a vertical state, and two adjacent traction members are symmetrically arranged with respect to the elastic plate, the upper part of the traction member is connected to one end of an elastic clip, the clip body of the elastic clip is in a vertical folded shape, the elastic clip in the vertical folded shape is an arc-shaped contour, the length of the line connecting the two ends of the elastic clip is X, the length of the widest line formed by two points on the arc contour is Y, and Y>X;

[0008] The bending amplitude of the elastic clip is A, a buffer is provided at the other end of the elastic clip, a convex angle is formed at the junction of the elastic clip and the buffer, the other end of the buffer is connected to the pressing piece, the tangent at the endpoint of the other end of the buffer intersects with the lower end of the central axis of the traction piece to form an acute angle, the pressing piece is a longitudinally arranged plate, the thickness of the pressing piece is gradually narrowed from top to bottom, the contour of the pressing piece is an inverted triangle, the lower angle of the inverted triangle is an acute angle, the outer surface of the pressing piece is covered with a wall layer, the wall layer is an elastic wall layer, the thickness of one side of the elastic wall layer and the edge of the elastic wall layer is less than the thickness of the other side of the elastic wall layer, the inner cavity of the wall layer is in a closed form, and an extended air valve is provided at the upper end of the wall layer;

[0009] When deformed, the elastic plate is concave in shape, the traction piece is arranged horizontally, the bending amplitude of the elastic clip is B, B>A, the inner sides of the two ends of the elastic clip respectively form a pre-tightening force with the skin surface at one side of the incision and above the peeling surface of one side of the incision, the inner wall of the wall layer and the outer surface of the compression piece form a compression cavity, and the side surface of the compression cavity forms a pre-tightening force with the peeling surface.

[0010] Furthermore, the elastic plate, the elastic clip, the pressing piece, and the buffer piece are made of metal materials, wherein the elastic plate and the elastic clip are made of spring steel material.

[0011] Furthermore, the pressure piece is subjected to blunt treatment.

[0012] Furthermore, a tangent line at an endpoint of the other end of the buffer member intersects with a lower end of the central axis of the traction member to form an acute angle.

[0013] Furthermore, the wall layer is made of silicone material.

[0014] Furthermore, the thickness of one side of the elastic wall layer is a, the thickness of the other side of the elastic wall layer is b, and the thickness at the edge of the elastic wall layer is c, b>a>c.

[0015] Furthermore, the edge of the compression cavity has an arc-shaped contour, and the thickness of the edge of the compression cavity tends to be gradually thinner.

[0016] Furthermore, the overall circumference formed by the concave elastic plate and the two adjacent traction members is compatible with the body circumference of the spinal surgery site.

[0017] Beneficial Effects

[0018] The present invention uses the elastic system of the elastic plate and the elastic clip and the effect of the buffer member dispersing stress, so that the outer stripping surface of the spinal surgery compressed by the compression member forms an outward pulling force, and there is no need to add artificial traction by the operator. At the same time, since the thickness of the compression member tends to be gradually narrowed from top to bottom, the contour of the compression member is an inverted triangle. When the stripping surface is small, the lower end of the compression member can also be placed deep in the stripping surface to further compress the stripping surface, so that the surgical field of view can be fully exposed. Compressing the stripping surface reduces the bleeding tendency of the stripping surface, and avoids unclear surgical field of view and aggravated bleeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view before operation of an embodiment of the present invention;

[0020] Figure 2 This is a traction principle diagram of an embodiment of the present invention;

[0021] Figure 3 Place a schematic diagram for an embodiment of the present invention;

[0022] Figure 4 A cross-sectional view of an embodiment of the present invention during operation;

[0023] Figure 5 This is a partial enlarged cross-sectional view of an embodiment of the present invention during operation;

[0024] Figure 6 It is an overall front view of the compression member, the compression cavity and the wall layer after inflation in one embodiment of the present invention;

[0025] Figure 7 It is an overall side view of the compression member, the compression cavity and the wall layer after inflation in one embodiment of the present invention;

[0026] Figure 8 It is an overall front view of the compression member, the compression cavity and the wall layer before inflation in one embodiment of the present invention;

[0027] Fig. 9 A top view of an embodiment of the present invention;

[0028] Fig.10 This is a three-dimensional diagram of an embodiment of the present invention.

[0029] In the figure: 1-elastic plate; 2-traction member; 3-elastic clip; 3a-buffer member; 4-compression member; 5-wall layer; 5a-compression cavity; 5b-extension valve; 10a-peeling surface; 10-vertebral column, 10b-tissues around the spine; 11-surgical window. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] like Figure 1-Figure 10 As shown, a window opening assembly for spinal surgery 10 comprises an elastic plate 1, which is arranged horizontally, and traction members 2 are respectively connected to both ends of the upper surface of the elastic plate 1, and the traction members 2 are perpendicular to the plate body of the elastic plate 1, and two adjacent traction members 2 are symmetrically arranged with respect to the elastic plate 1, and the upper part of the traction member 2 is connected to one end of an elastic clip 3, and the clip body of the elastic clip 3 is in a vertical folded shape, and the elastic clip 3 in the vertical folded shape is an arc-shaped contour, and the length of the connecting line at both ends of the elastic clip 3 is X, and the length of the widest connecting line formed by two points on the arc-shaped contour is Y, and Y>X, so that the inner sides of the two ends of the elastic clip 3 can form a pre-tightening force with the skin surface at one side of the surgical window 11 and above the peeling surface 10a inside the surgical window 11 on one side, and the elastic clip 3 can be stuck at one side of the surgical window 11 to prevent the elastic clip 3 and the compression member 4 from slipping off the surgical window.

[0032] In this embodiment, the bending amplitude of the elastic clip 3 is A, and a buffer member 3a is provided at the other end of the elastic clip 3. A convex angle shape is formed at the junction of the elastic clip 3 and the buffer member 3a. The setting of the convex angle shape can strengthen the limiting effect of the elastic clip 3 on the peeling surface 10a in the surgical window 11 on one side, and further prevent the elastic clip 3 and the compression member 4 from slipping off the surgical window. Since the limiting effect of the compression member 4 on the peeling surface 10a in the surgical window 11 on one side is generated by the elastic effect of the elastic clip 3, the setting of the buffer member 3a can prevent the uneven pressure of the compression member 4 on the peeling surface 10a caused by the limiting effect of the elastic clip 3 on the peeling surface 10a in the surgical window 11 on one side.

[0033] In this embodiment, the other end of the buffer member 3a is connected to the compression member 4, and the compression member 4 is a longitudinally arranged plate. The thickness of the compression member 4 is gradually narrowed from top to bottom. The outline of the compression member 4 is an inverted triangle, and the lower angle of the inverted triangle is an acute angle, so that the lower end of the compression member 4 can be placed deep in the peeling surface 10a when the peeling surface 10a is small.

[0034] In this embodiment, the outer surface of the compression member 4 is covered with a wall layer 5, and the wall layer 5 is an elastic wall layer 5. The thickness of one side of the elastic wall layer 5 and the edge of the elastic wall layer 5 is less than the thickness of the other side of the elastic wall layer 5. The other side of the elastic wall layer 5 is close to the spine 10. Since the thickness of the other side of the elastic wall layer 5 is the largest, in the inflated state, the other side of the elastic wall layer 5 does not expand or expands slightly, thereby avoiding the obstruction of the surgical field of view due to the inflation of the elastic wall layer 5. The thickness of the edge of the elastic wall layer 5 and the thickness of the other side of the elastic wall layer 5 are relatively small, and they are prone to expansion in the inflated state, which can further compress the peeling surface 10a. The expansion of the edge of the elastic wall layer 5 can open and compress the surrounding tissues of the end of the peeling surface 10a that is not compressed by the compression member 4, thereby increasing the surgical field of view and reducing the window area required for surgery before the operation and the size of the peeling surface 10a. The inner cavity of the wall layer 5 is in a closed form, and an extended air valve 5b is provided at the upper end of the wall layer 5.

[0035] In this embodiment, since the two adjacent traction members 2 are symmetrically arranged about the elastic plate 1, the two adjacent compression members 4 are also symmetrically arranged about the elastic plate 1, and the two adjacent compression members 4 are also symmetrically arranged about the surgical window 11. During operation, the whole formed by the compression member 4 and the traction member 2 is pulled toward the center of the surgical window 11, and the two adjacent compression members 4 are respectively extended into the surgical window 11 to press against the peeling surfaces 10a on both sides of the surgical window 11. Due to the elastic effect of the elastic plate 1 and the elastic clip 3, the two adjacent compression members 4 respectively press the peeling surfaces 10a on both sides toward each other.

[0036] In this embodiment, when deformed, the elastic plate 1 is concave in shape, the traction member 2 is arranged horizontally, the bending amplitude of the elastic clip 3 is B, B>A, the inner sides of the two ends of the elastic clip 3 respectively form a pre-tightening force with the skin surface at one side of the surgical window 11 and above the peeling surface 10a in the surgical window 11 on one side, the inner wall of the wall layer 5 and the outer surface of the compression member 4 form a compression cavity 5a, and the side of the compression cavity 5a forms a pre-tightening force with the peeling surface 10a, further compressing the peeling surface 10a and stretching the tissue in the surgical window 11, thereby increasing the surgical field of view and reducing the size of the surgical window area and the peeling surface 10a required before the operation.

[0037] In this embodiment, the elastic system of the elastic plate 1, the elastic clip 3, and the buffer member 3a is used to form a uniform outward pulling force on the outer surgical side peeling surface 10a of the spine 10 compressed by the compression member 4, thereby exposing the surgical field of view without the need for additional manual traction by the operator. At the same time, since the thickness of the compression member 4 tends to gradually narrow from top to bottom, the outline of the compression member 4 is an inverted triangle. When the peeling surface 10a is small, the lower end of the compression member 4 can also be placed deep in the peeling surface 10a. Since the thickness of one side of the elastic wall layer 5 and the edge of the elastic wall layer 5 are less than the thickness of the other side of the elastic wall layer 5 and the arrangement of the compression cavity 5a, the peeling surface 10a can be further compressed, the tissue surgical window 11 can be stretched open, and the peeling surface 10a can be compressed to reduce bleeding on the peeling surface 10a, thereby avoiding unclear surgical field of view and aggravated bleeding, increasing the surgical field of view, and fully exposing the surgical field of view, thereby reducing the surgical window area and the size of the peeling surface 10a required before the operation.

[0038] In this embodiment, the elastic plate 1, the elastic clip 3, the compression piece 4, and the buffer piece 3a are made of metal materials, wherein the elastic plate 1 and the elastic clip 3 are made of spring steel materials, so that the elastic plate 1 and the elastic clip 3 have higher elastic limit, strength limit and yield strength ratio, and are not prone to plastic deformation, thereby ensuring the stability and durability of the device. The elastic clip 3 can be stuck at the surgical window 11 on one side to prevent the elastic clip 3 and the compression piece 4 from slipping off the surgical window.

[0039] In this embodiment, the compression piece 4 is blunted and the wall layer 5 is made of silicone to prevent the sharp metal edges of the compression piece 4 and the wall layer 5 from damaging the tissue or nerves on the peeling surface 10a when the whole enters the surgical window 11.

[0040] In this embodiment, the tangent line at the endpoint of the other end of the buffer member 3a intersects with the lower end of the central axis of the traction member 2 to form an acute angle. The above arrangement can further enhance the compression effect of the compression member 4 on the peeling surface 10a.

[0041] In this embodiment, the thickness of one side of the elastic wall layer 5 is a, the thickness of the other side of the elastic wall layer 5 is b, and the thickness at the edge of the elastic wall layer 5 is c, b>a>c. Since the peeling surface 10a has been compressed by the compression member 4 in the non-inflated state, when inflated, the edge of the elastic wall layer 5 is filled first, and then the compression cavity 5a can first compress the tissue around the peeling surface 10a that is not compressed by the compression member 4, thereby avoiding unclear vision caused by bleeding from the tissue around the peeling surface 10a.

[0042] In this embodiment, the edge of the compression chamber 5a is in an arc-shaped contour, and the thickness of the edge of the compression chamber 5a tends to be gradually thinner. When inflating, the edge of the elastic wall layer 5 is filled first, that is, the arc-shaped contour of the edge of the compression chamber 5a is formed first. The tissue surface around the end of the peeling surface 10a is generally irregular in shape, and the arc-shaped contour and the gradually thinning trend are more in line with the irregular tissue surface around the end of the peeling surface 10a.

[0043] In this embodiment, the overall circumference formed by the concave elastic plate 1 and the two adjacent traction members 2 is adapted to the body circumference of the surgical site of the spine 10 .

[0044] The working process of this embodiment is as follows:

[0045] S1 Before operation: Place the elastic plate 1-traction member 2-elastic clip 3-buffer member 3a-compression member 4 wrapping the wall layer 5 of this embodiment as a whole on the operating table, make the patient lie prone, and make the part where the spinal surgery 10 needs to be performed be on the same vertical line with the middle part of the elastic plate 1.

[0046] S2 In operation - surgical fenestration: A surgical knife is used to open a window on the affected spinal column 10, and the surrounding tissues and nerves of the spinal column 10 are peeled off.

[0047] S3 operation - elastic compression: pull the traction pieces 2, elastic clips 3, buffer pieces 3a and compression pieces 4 on both sides to form a whole, so that the elastic plate 1 is concave, pull the compression piece 4, so that the bending arc of the elastic clip 3 becomes smaller, and the compression piece 4 is away from the adjacent traction piece 2, and the compression piece 4 is placed in the surgical window 11. The traction piece 2 is arranged horizontally. Due to the resilience of the elastic plate 1, the traction effect of the traction piece 2 and the stress dispersion effect of the buffer piece 3a, the peeling surface 10a compressed by the compression piece 4 is pulled away from the spine 10, compressing the peeling surface 10a, reducing bleeding on the peeling surface 10a, and stretching the surgical window 11. The bending amplitude of the elastic clip 3 is increased, and the elastic clip 3 is stuck at the surgical window 11 on one side to prevent the elastic clip 3, the buffer piece 3a, and the compression piece 4 from slipping off the surgical window, so that the whole is in a stable state.

[0048] S4 operation - inflation and compression: gas is injected by extending the air valve 5b. Due to the thickness of the wall layer 5 b>a>c, the gas first fills the edge of the wall layer 5, first compressing the tissue around the end of the peeling surface 10a that is not compressed by the compression piece 4, increasing the surgical field of view, which can reduce the area of ​​surgical window opening and the size of the peeling surface 10a required before the operation, and then fills the other side of the wall layer 5 to further compress the peeling surface 10a, reduce bleeding on the peeling surface 10a, and open the surgical window 11.

[0049] S5 In operation - surgical treatment: Perform surgical treatment on the spine 10 according to the patient's condition.

[0050] S5 Post-operation - end of surgery: deflate by extending the air valve 5b, take out the compression piece 4 from the surgical window 11, put the present embodiment in the pre-operation state, and suture the surgical window.

[0051] The present invention has been specifically described above in conjunction with the embodiments. Various improvements can still be made without departing from the core scope of the present invention, and equivalents can be used to replace the components therein. As long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be used in combination with each other in any way. These combinations are not exhaustively described in this specification, which is only for the purpose of saving space and resources. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed herein, but covers all technical solutions that fall within the scope of the claims.

Claims

1. A window opening assembly for spinal surgery, characterized in that: It comprises an elastic plate, the elastic plate is arranged in a transverse manner, and traction members are respectively connected to both ends of the upper surface of the elastic plate, the traction member and the plate body of the elastic plate are in a vertical state, and two adjacent traction members are symmetrically arranged with respect to the elastic plate, and the upper part of the traction member is connected to one end of the elastic clip, and the clip body of the elastic clip is in a vertical folded shape, and the elastic clip in the vertical folded shape is an arc-shaped profile, the length of the line connecting the two ends of the elastic clip is X, and the length of the widest line formed by two points on the arc profile is Y, and Y>X; The bending amplitude of the elastic clip is A, a buffer is provided at the other end of the elastic clip, a convex angle is formed at the junction of the elastic clip and the buffer, the other end of the buffer is connected with a pressing piece, the pressing piece is a longitudinally arranged plate, the thickness of the pressing piece is gradually narrowed from top to bottom, the contour of the pressing piece is an inverted triangle, the lower angle of the inverted triangle is an acute angle, the outer surface of the pressing piece is covered with a wall layer, the wall layer is an elastic wall layer, the thickness of one side of the elastic wall layer and the edge of the elastic wall layer is less than the thickness of the other side of the elastic wall layer, the inner cavity of the wall layer is in a closed form, and an extended air valve is provided at the upper end of the wall layer; When deformed, the elastic plate is concave in shape, the traction piece is arranged horizontally, the bending amplitude of the elastic clip is B, B>A, the inner sides of the two ends of the elastic clip respectively form pre-tightening force with the skin surface at one side of the incision and above the peeling surface of one side of the incision, the inner wall of the wall layer and the outer surface of the compression piece form a compression cavity, and the side surface of the compression cavity forms a pre-tightening force with the peeling surface.

2. A window opening assembly for spinal surgery according to claim 1, characterized in that: The elastic plate, the elastic clip, the pressing piece and the buffer piece are made of metal materials, wherein the elastic plate and the elastic clip are made of spring steel material.

3. The window opening assembly for spinal surgery according to claim 1, characterized in that: The compression member is blunt-treated.

4. The window opening assembly for spinal surgery according to claim 1, characterized in that: A tangent line at an end point of the other end of the buffer member intersects with a lower end of the central axis of the traction member to form an acute angle.

5. The window opening assembly for spinal surgery according to claim 1, characterized in that: The wall layer is made of silica gel.

6. The window opening assembly for spinal surgery according to claim 1, characterized in that: The thickness of one side of the elastic wall layer is a, the thickness of the other side of the elastic wall layer is b, and the thickness at the edge of the elastic wall layer is c, b>a>c.

7. The window opening assembly for spinal surgery according to claim 1, characterized in that: The edge of the compression cavity is in an arc shape, and the thickness of the edge of the compression cavity tends to be gradually thinner.

8. The window opening assembly for spinal surgery according to claim 1, characterized in that: The overall circumference formed by the concave elastic plate and the two adjacent traction members is adapted to the body circumference of the spinal surgery site.

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