Retraction device for thoracic vertebra operation

Abstract

The utility model provides a retractor for thoracic vertebra surgery, and belongs to the field of medical instruments. The retraction device comprises a holding part, an extension part; the bending part is a hook-shaped bending plate, the short edge of the bending part is connected with the extension part, and the tail end of the long edge and the tail end of the bulge at the hook-shaped bottom are respectively positioned on two sides of the plane where the extension part is positioned; the retraction part is connected with the long edge of the bending part, the retraction part is in a plate shape and is parallel to the extension part, the tail end of the retraction part laterally extends to form a clamping block, the extending direction of the clamping block and the extending direction of the long edge of the hook-shaped bending part both face the same side face of the extension part, and a clamping groove matched with the thoracic vertebra T1 and / or the thoracic vertebra T2 is formed in the clamping block in a concave mode. According to the retractor, through the design of the bending part and the retractor part, in the anterior or anterior-posterior joint operation of the cervical-thoracic vertebra joint part or the upper thoracic vertebra, the retractor avoids the clavicle or the sternum handle, and the trachea, the esophagus and the blood vessel blocked in front of the thoracic vertebra are pushed aside, so that the visual field is exposed to facilitate the operation.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and in particular relates to a distraction device used for thoracic vertebrae surgery. Background Art

[0002] Common diseases of the cervicothoracic junction or upper thoracic spine include ossification of the ligaments, vertebral and adnexal tumors, rare intervertebral disc herniation and infection, and intraspinal or extraspinal boundary tumors.

[0003] Some intraspinal tumors can only be treated through posterior decompression; some borderline tumors require combined anterior and posterior surgery; and lesions occurring in the vertebral body, intervertebral space, prevertebral space, or paravertebral space that extend to the thoracic cavity require anterior surgery.

[0004] Whether it is an anterior or posterior approach, it is a surgery with greater trauma and higher risk. Conventional surgery requires splitting the sternum or clavicle and pushing open the mediastinum to facilitate surgical exposure. In addition to the large trauma, this approach also requires the cooperation of thoracic surgery. With the development of minimally invasive technology, the use of channel technology and catheter lighting through the thoracic outlet has made it possible to complete the operation without opening the chest. Due to obstruction of the trachea, esophagus and neck blood vessels, two assistants are required to pull the trachea in front of the vertebra to both sides during the operation. In addition, the clavicle and sternal manubrium blocking the upper part of the trachea are restricted, making it more difficult to bypass the clavicle and sternal manubrium to pull the trachea in front of the vertebra, which greatly affects the operator's operation.

[0005] Therefore, there is an urgent need for a new type of retraction device for thoracic spine surgery that can bypass the restrictions of the clavicle and sternal manubrium and retract the trachea in front of the vertebra, thereby facilitating the operator's operation. Utility Model Content

[0006] The utility model is developed to solve the above problems, and aims to provide a distraction device for thoracic spine surgery.

[0007] The utility model provides a retraction device for thoracic spine surgery, which has the following characteristics: it is used for avoiding the clavicle or sternal manubrium during anterior or posterior combined surgery at the junction of the cervical and thoracic spine or the upper thoracic spine, and moving aside the trachea, esophagus and blood vessels blocking the front of the thoracic spine to expose the field of vision to facilitate surgery, comprising: a gripping portion for the user to hold; an extension portion, which is plate-shaped and extends from one end of the gripping portion; a bending portion, which is a hook-shaped bent plate, the short side of which is connected to the extension portion, and the long side end of the hook-shaped bending portion and the protruding end of the hook-shaped bottom are separated from the two sides of the plane where the extension portion is located; a retraction portion, which is connected to the long side of the bending portion, the retraction portion is plate-shaped and parallel to the extension portion, and a clamping block is extended laterally from the end of the retraction portion, and the extension direction of the clamping block and the extension direction of the long side of the hook-shaped bending portion are both toward the same side of the extension portion, wherein the clamping block is concavely provided with a clamping groove matching the thoracic vertebra T1 and / or thoracic vertebra T2.

[0008] The retraction device for thoracic spine surgery provided by the present invention may also have the following features: the gripping portion includes: two splints with trapezoidal radial cross-sections, the two splints being mirror-jointed; and a fixing plate, which is plate-shaped and clamped between the two splints by bolts, with the extension portion extending integrally from one end of the fixing plate.

[0009] The distraction device for thoracic spine surgery provided by the present invention may also have the following feature: wherein, two adjacent sides of the extension portion where one end is connected to the gripping portion are both recessed with first arc-shaped recesses with openings facing the periphery on both sides.

[0010] The distraction device for thoracic spine surgery provided by the present invention may also have the following features: wherein the bottom of the hook-shaped bent portion is arc-shaped, and the arc-shaped portion is recorded as an arc segment, and the curvature of the arc segment matches the clavicle or sternal manubrium.

[0011] The distraction device for thoracic spine surgery provided by the present invention may also have the following feature: the arc angle of the arc segment is 120°.

[0012] The retraction device for thoracic spine surgery provided by the present invention may also have the following features: wherein, the two arc-shaped side edges of the arc-shaped segment are both recessed with second arc-shaped depressions with openings facing the periphery on both sides, and the bending portion has protruding support members at the two second arc-shaped depressions on both sides of the bending portion, and the direction in which the support members are protruded is opposite to the extension direction of the long side of the hook-shaped bending portion, and is respectively facing the two side faces of the extension portion.

[0013] The retraction device for thoracic spine surgery provided by the present invention may also have the following features: wherein the retraction portion is an arc-shaped plate, and the central axis of the arc-shaped plate is parallel to the length direction of the extension portion.

[0014] The distraction device for thoracic spine surgery provided by the present invention may also have the following feature: the distraction portion of the arc-shaped plate structure has a plurality of through holes distributed in an array along its length direction.

[0015] The distraction device for thoracic spine surgery provided by the present invention may also have the following features: wherein the through holes are long strips, and the lengths of the through holes distributed in an array are the same, or they become longer or shorter in sequence along the length direction of the distraction portion.

[0016] The retraction device for thoracic spine surgery provided by the present invention may also have the following features: the materials of the extension part, the bending part and the retraction part include alloy and / or non-toxic metal, and the extension part, the bending part and the retraction part are designed to be integrally formed.

[0017] Functions and effects of utility models

[0018] According to the utility model, the retraction device for thoracic spine surgery includes: a gripping portion for a user to grip; an extension portion, which is plate-shaped and extends from one end of the gripping portion; a bending portion, which is a hook-shaped bent plate, whose short side is connected to the extension portion, and the long side end of the hook-shaped bending portion and the protruding end of its hook-shaped bottom are separated on both sides of the plane where the extension portion is located; a retraction portion, which is connected to the long side of the bending portion, the retraction portion is plate-shaped and parallel to the extension portion, and a clamping block is extended laterally from the end of the retraction portion, and the extension direction of the clamping block and the extension direction of the long side of the hook-shaped bending portion are both toward the same side of the extension portion, wherein a clamping groove matching the thoracic vertebra T1 and / or thoracic vertebra T2 is concavely provided on the clamping block.

[0019] Therefore, the retraction device for thoracic spine surgery of the present invention, through the design of the specially shaped bending part and the retraction part, can avoid the clavicle or sternal manubrium during the anterior or posterior combined surgery of the cervical-thoracic junction or the upper thoracic spine, and push away the trachea, esophagus and blood vessels blocking the front of the thoracic spine to reveal the field of view and facilitate the surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a distraction device for thoracic spine surgery according to an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional diagram of a distraction device for thoracic spine surgery according to an embodiment of the present utility model;

[0022] Figure 3 yes Figure 2 Enlarged view of area A in the middle;

[0023] Figure 4 1 is a side view of a distraction device for thoracic spine surgery according to an embodiment of the present invention;

[0024] Figure 5 yes Figure 2 a corresponding stereogram from another angle;

[0025] Figure 6 yes Figure 5 Magnified view of area B. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following embodiments and accompanying drawings specifically illustrate a retraction device for thoracic spine surgery of the present invention.

[0027] <Example>

[0028] Figure 1 This is a front view of a retraction device for thoracic spine surgery according to an embodiment of the present utility model.

[0029] like Figure 1 As shown, this embodiment provides a distraction device 100 for thoracic spine surgery, including a gripping portion 10 , an extension portion 20 , a bending portion 30 , a spreading member 40 and a distraction portion 50 .

[0030] Figure 2 This is a three-dimensional diagram of a distraction device for thoracic spine surgery according to an embodiment of the present utility model.

[0031] like Figure 2 As shown, the gripping portion 10 includes a clamping plate 11 and a fixing plate 12 .

[0032] The splints 11 are two wooden strips with trapezoidal radial cross sections. The two splints 11 are mirror-imaged and spliced together to form the main body of the grip 10 .

[0033] The fixing plate 12 is plate-shaped and is clamped between the two clamping plates 11 by bolts.

[0034] like Figures 1-2 As shown, the extension portion 20 is plate-shaped and integrally extends from one end of the fixing plate 12 .

[0035] Two adjacent side edges of the connection between the extension portion 20 and the fixing plate 12 are both provided with first arc-shaped recesses 20 a with openings facing the periphery on both sides, and the two first arc-shaped recesses 20 a are mirror-symmetrical.

[0036] Figure 3 yes Figure 2 Magnified view of area A in center.

[0037] like Figure 3 As shown, the bent portion 30 includes a short side 31 , an arc segment 32 and a long side 33 , which are sequentially connected to form a hook-shaped bent plate structure.

[0038] Figure 4 It is a side view of a distraction device for thoracic spine surgery according to an embodiment of the present invention.

[0039] like Figures 1 to 4 As shown, the short side 31 extends laterally from one end of the extension 20 in an integrally formed manner. In this embodiment, the short side 31 and the extension 20 are aligned at a 120° angle, and the connection between the two is smoothly curved. Specifically, the length of the short side 31 in this embodiment is 1 cm.

[0040] The arc segment 32 is a circular arc plate that extends integrally from one end of the short side 31. The arc segment 32 is tangential to the short side 31, and the arc of the arc segment 32 is oriented in the same direction as the extension of the short side 31. In this embodiment, the arc segment 32 has an arc angle of 120° and a radius of 2 cm.

[0041] Both arc-shaped sides of the arc-shaped segment 32 are concavely formed with second arc-shaped recesses 32 a with openings facing the periphery on both sides.

[0042] Long side 33 integrally extends from one end of arcuate segment 32 and is tangential to arcuate segment 32. Long side 33 extends in a direction opposite to that of short side 31, toward either side of extension portion 20. Specifically, in this embodiment, long side 33 is 5 cm long.

[0043] The two arc-shaped expansion members 40 are integrally formed and extend laterally from the two second arc-shaped recesses 32 a , respectively, and their extension direction is the same as that of the short side 31 , both toward the same side of the extension portion 20 .

[0044] Figure 5 yes Figure 2 The corresponding stereogram from another angle.

[0045] like Figures 1 to 5 As shown, the retractor 50 is an integrally formed, laterally extending from the end of the long side 33. It is a curved plate, with its length and central axis parallel to the length of the extension portion 20. Specifically, in this embodiment, the retractor 50 is 8 cm long, with the curved protrusion of the curved plate structure oriented toward the same side as the extension direction of the spreader 40, and the junction between the retractor 50 and the long side 33 is smoothly curved.

[0046] The retracting portion 50 has a plurality of sequentially elongated through holes 50 a formed in a row on its arc-shaped plate along the extending direction, and the plurality of through holes 50 a are parallel to each other.

[0047] Figure 6 yes Figure 5 Magnified view of area B.

[0048] like Figures 1 to 6 As shown, the retractor 50 has a clamping block 50 b extending laterally from the end of its extension direction. The extension direction of the clamping block 50 b and the arc-shaped protrusion of the arc-shaped plate structure of the retractor 50 are respectively directed toward two different side surfaces of the extension portion 20 .

[0049] A distal end of the engaging block 50 b (ie, the side facing away from the extension portion 20 ) is provided with an engaging groove 50 c that matches the thoracic vertebra T1 and / or the thoracic vertebra T2 .

[0050] In this embodiment, the maximum width of the extension portion 20, the bending portion 30, and the retractor portion 50 is set to 4 cm. (Slightly smaller than the width of the incision opened during surgery)

[0051] In this embodiment, except for the splint 11 which is made of wood, the other components are all integrally formed and made of an alloy material with a thickness of 2 mm. The sharp corners of each component are rounded, which not only makes the whole have a certain rigidity but also prevents scratches or secondary injuries to the patient's body, surgical incisions and organs.

[0052] The use process of the retraction device 100 for thoracic spine surgery:

[0053] S01. In anterior or posterior combined surgery of the cervicothoracic junction or upper thoracic spine, the surgeon first makes an incision at a predetermined desired location on the patient's body.

[0054] S02, during the operation, the assistant uses two retractor devices 100, inserts the main parts of the retractor devices 100 into the patient's body through the opened incision, and the two retractor devices 100 are inserted into the patient's body at the same time.

[0055] S03: The arcuate notch formed by the arcuate segment 32 is aligned with the clavicle or sternal manubrium below the incision. The retractor 50, connected by its long side 33 and arcuate segment 32, extends into the patient's body. The retractor 50 is used to push aside the trachea, esophagus, and blood vessels above the thoracic vertebrae T1 or T2 requiring surgery, thus providing the surgeon with a visual field.

[0056] At the same time, the engaging groove 50c on the engaging block 50b of the retractor 50 matches and engages with the thoracic vertebra T1 or the thoracic vertebra T2, thereby ensuring the stability of the retractor 100 during use.

[0057] During this step, the extension portion 20 and its two first arc-shaped recesses 20a are located at the patient's incision during the retraction process. The width of the extension portion 20 is slightly smaller than the patient's incision. If the retraction device 100 accidentally moves slightly during the operation, the two smooth first arc-shaped recesses 20a can cooperate with each other to reduce irritation to the incision.

[0058] In this step, the second arc-shaped recess 32a on the arc-shaped section 32 of the clavicle or sternal manubrium and the expansion piece 40 protruding thereon cooperate with each other. On the one hand, they can reduce the stimulation to the patient's wound and the clavicle or sternal manubrium when the retraction device 100 accidentally moves slightly; on the other hand, the space formed by the two expansion pieces 40 can ensure that the channel is unobstructed when the surgeon uses surgical instruments to enter the patient's body for surgery.

[0059] Functions and Effects of the Embodiments

[0060] According to the present embodiment, a retraction device for thoracic spine surgery is provided, which is used to avoid the clavicle or sternal manubrium during anterior or anteroposterior combined surgery at the junction of the cervical and thoracic spine or the upper thoracic spine, and to push aside the trachea, esophagus and blood vessels blocking the front of the thoracic spine to reveal the field of view and facilitate surgery, because it includes: a gripping portion for the user to hold; an extension portion, which is plate-shaped and extends from one end of the gripping portion; a bending portion, which is a hook-shaped bent plate, whose short side is connected to the extension portion, and the long side end of the hook-shaped bending portion and the protruding end of the hook-shaped bottom are separated on both sides of the plane where the extension portion is located; a retraction portion, which is connected to the long side of the bending portion, the retraction portion is plate-shaped and parallel to the extension portion, and a clamping block is extended laterally from the end of the retraction portion, and the extension direction of the clamping block and the extension direction of the long side of the hook-shaped bending portion are both toward the same side of the extension portion, wherein the clamping block is concavely provided with a clamping groove matching the thoracic vertebra T1 and / or thoracic vertebra T2.

[0061] Therefore, the retraction device for thoracic spine surgery in this embodiment, through the design of the specially shaped bending part and retraction part, can avoid the clavicle or sternal manubrium during the anterior or posterior combined surgery at the cervical-thoracic junction or upper thoracic spine, and push away the trachea, esophagus and blood vessels blocking the front of the thoracic spine to reveal the field of view and facilitate the surgery.

[0062] Furthermore, the gripping portion comprises two clamping plates with trapezoidal radial cross-sections, which are joined in mirror-image orientation; and a plate-shaped fixing plate, which is bolted between the two clamping plates, with an integral extension extending from one end of the fixing plate. This arrangement allows the surgeon or assistant to conveniently and securely hold the entire retractor for thoracic spine surgery during surgery.

[0063] Furthermore, two adjacent sides of the extension portion where it connects to the gripping portion are each provided with a first arc-shaped recess, opening toward the outer periphery on both sides. This arrangement allows the extension portion, located at the patient's incision, to interact with the two smoothly curved first arc-shaped recesses to minimize irritation if the retraction device accidentally moves slightly during surgery.

[0064] Furthermore, the bottom of the hook-shaped bent portion is arc-shaped, which is referred to as an arc segment. The arc of the arc segment matches the clavicle or sternum. The arc of the arc segment is 120 degrees. This configuration allows the bent portion to fit snugly around the clavicle or sternum.

[0065] Furthermore, both curved sides of the arc segment are recessed with second curved recesses, opening toward the outer periphery on both sides. The bent portion has protruding extension members on the two second curved recesses on both sides of the bent portion. The extension members are protruding in a direction opposite to the direction of extension of the long side of the hook-shaped bent portion, facing toward the two side surfaces of the extended portion. This arrangement allows the second curved recess on the arc segment that is engaged with the clavicle or sternal manubrium to cooperate with the protruding extension members. This can, on the one hand, reduce irritation to the patient's wound and clavicle or sternal manubrium if the retraction device accidentally moves slightly; on the other hand, the space formed by the two extension members ensures that the surgical instrument access channel is unobstructed when the surgeon uses it to perform the operation.

[0066] Furthermore, the retractor is an arc-shaped plate, the central axis of which is parallel to the length direction of the extension portion. With this arrangement, the retractor can be used to push aside the trachea above the thoracic vertebra T1 or thoracic vertebra T2 to be operated on, thereby providing the surgeon with a visual field.

[0067] Furthermore, the extension portion, the bending portion and the retractor are integrally formed of an alloy material. This configuration not only provides a certain degree of rigidity to the retractor as a whole, but also prevents scratches or secondary injuries to the patient's body, surgical incision and organs.

[0068] Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and the specification are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements 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 distraction device for thoracic spine surgery, characterized in that: It is used in anterior or posterior combined surgery at the cervicothoracic junction or upper thoracic spine to avoid the clavicle or sternal manubrium and to push aside the trachea, esophagus and blood vessels blocking the front of the thoracic spine to reveal the field of view and facilitate surgery, including: A grip portion, for a user to grip; an extension portion in a plate shape extending from one end of the grip portion; The bent portion is a hook-shaped bent plate, the short side of which is connected to the extension portion, and the ends of the long sides of the hook-shaped bent portion and the ends of the protrusions at the bottom of the hook are separated on both sides of the plane where the extension portion is located; and The retractor is connected to the long side of the bent portion, the retractor is plate-shaped and parallel to the extension portion, and a clamping block is extended laterally from the end of the retractor, and the extension direction of the clamping block and the extension direction of the long side of the hook-shaped bent portion are both toward the same side of the extension portion. Wherein, the clamping block is provided with a clamping groove matching the thoracic vertebra T1 and / or the thoracic vertebra T2.

2. The retraction device for thoracic spine surgery according to claim 1, Its characteristics are: in, The gripping portion comprises: Two plywood plates with trapezoidal radial cross sections, the two plywood plates being mirror-jointed; and The fixing plate is plate-shaped and is clamped between the two clamping plates by bolts. The extension portion is integrally formed and extends from one end of the fixing plate.

3. The distraction device for thoracic spine surgery according to claim 1, characterized in that: in, Two adjacent sides of the extension portion where the end connecting to the grip portion is connected are both concavely provided with first arc-shaped depressions with openings facing the periphery on both sides.

4. The distraction device for thoracic spine surgery according to claim 1 or 3, characterized in that: in, The bottom of the hook-shaped bent portion is arc-shaped, and the arc-shaped portion is recorded as an arc segment. The curvature of the arc segment matches the clavicle or the sternal manubrium.

5. The distraction device for thoracic spine surgery according to claim 4, characterized in that: in, The arc angle of the arc segment is 120°.

6. The distraction device for thoracic spine surgery according to claim 4, characterized in that: in, The two arc-shaped sides of the arc-shaped segment are each provided with a second arc-shaped depression with openings facing the periphery on both sides. The bending portion has protruding expansion members at the two second arc-shaped recesses on both sides thereof. The direction in which the stretching member is protruded is opposite to the extending direction of the long side of the hook-shaped bent portion, and is respectively directed toward the two side surfaces of the extended portion.

7. The distraction device for thoracic spine surgery according to claim 1, characterized in that: in, The retractor is an arc-shaped plate. The central axis of the arc-shaped plate is parallel to the length direction of the extension portion.

8. The distraction device for thoracic spine surgery according to claim 1 or 7, characterized in that: in, The retracting portion of the arc-shaped plate structure has a plurality of through holes distributed in an array along its length direction.

9. The distraction device for thoracic spine surgery according to claim 8, characterized in that: in, The through hole is in the shape of an elongated strip. The lengths of the plurality of through holes distributed in an array are the same, or are successively longer or shorter along the length direction of the retracting portion.

10. The distraction device for thoracic spine surgery according to claim 1, characterized in that: in, The materials of the extension portion, the bending portion and the retracting portion include alloy and / or non-toxic metal. The extension portion, the bending portion and the retracting portion are designed to be integrally formed.

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