CN214857266U - Sleeve guide for cervical vertebra spinous process longitudinal cutting type spinal canal enlarging and forming operation - Google Patents

Abstract

The utility model provides a sleeve pipe director that is used for cervical vertebra spinous process to indulge and cuts formula canalis spinalis and enlarges shaping art relates to medical instrument's technical field. The sleeve guider for the cervical spine longitudinal cutting type spinal canal enlargement plasty comprises a guide tube for guiding a sleeve; one end of the guide tube is an inlet for inserting the sleeve, and the other end of the guide tube is an extension port for extending the sleeve. The technical effect of reducing the risk of spinal cord injury is achieved.

Description

Sleeve guide for cervical vertebra spinous process longitudinal cutting type spinal canal enlarging and forming operation

Technical Field

The utility model relates to the technical field of medical equipment, particularly, relate to a sleeve pipe director that is used for cervical vertebra spinous process to indulge and cuts formula canalis spinalis and enlarges shaping art.

Background

The cervical spine longitudinal cutting type spinal canal enlargement molding and coral artificial bone bridge implantation (SLAC) are one of the operations for treating cervical canal stenosis. The operation in the art needs to cut off the whole C3 vertebral plate and the upper half part of the C7 vertebral plate, then needs to penetrate a sleeve with the diameter of about 1.2mm into the lower part of the C4-C6 vertebral plate and the dorsal dura mater side, then penetrates a metal wire saw into the sleeve, takes out the sleeve, saws the spinous process longitudinally by the wire saw, after grinding out the lateral sulcus, opens the vertebral plate to the two sides, enlarges the volume of the vertebral canal, and then uses the coral artificial bone as the bone bridge to support and open between the vertebral plates, thereby avoiding the vertebral plate from being closed again. The guide can be inserted a small amount below the vertebral plate to ensure that the cannula penetrates in a direction parallel to the dura mater and the vertebral plate.

However, the current method of cannula penetration is that the flat forceps or the hemostatic forceps hold the cannula to penetrate between the vertebral plate and the dura mater, each penetration is several millimeters, the catheter can be inserted into a sufficient length and exposed from the gap between the vertebral plate on the other side and the dura mater only by repeated insertion operations, the penetration angle is difficult to be completely parallel to the dura mater and the vertebral plate due to the limited local operation space, so that the penetration is difficult, or an acute angle is formed on the contact surface of the dura mater in the penetration process, a component force pressing towards the dura mater direction exists, the dura mater can be pressed to a certain degree, and the risk of spinal cord injury is increased. Also, during repeated insertion, there is a tendency for the cannula to wobble, rotate or otherwise change direction of travel during the gradual penetration process, as there is no restriction to the cannula, but rather the cannula itself remains between the lamina and dura mater.

Therefore, it is an important technical problem to be solved by those skilled in the art to provide a cannula guide for a longitudinal cutting type spinal canal enlargement molding of a cervical spinous process with a small risk of spinal cord injury.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sleeve pipe director that is used for cervical vertebra spinous process to indulge cutting formula canalis spinalis and enlarges plasty to alleviate the technical problem that the risk is big to spinal cord injury among the prior art.

In a first aspect, an embodiment of the present invention provides a cannula guide for a longitudinal cutting type spinal canal enlargement molding operation of a cervical spinous process, including a guide tube for guiding a cannula;

one end of the guide tube is an inlet for inserting the sleeve, and the other end of the guide tube is an extension port for extending the sleeve;

and the two sides of the extension opening are fixedly provided with holding pieces which can be abutted against the vertebral plate.

In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the guide tube is curved.

In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the inlet port is funnel-shaped.

In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a handle is fixedly disposed on the guiding tube.

In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the handle is in a flat sheet shape.

In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein an anti-slip layer is disposed on the handle.

In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a window is disposed on the guiding tube, and the medical staff can observe the mark on the sleeve in the guiding tube through the window.

In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the window is a waist-shaped slot, and an extending direction of the waist-shaped slot is perpendicular to an extending direction of the guide tube.

With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the guiding tube is made of a transparent plastic tube.

With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the holding piece protrudes from an end of the guide tube;

the edge of the holding piece is set to be a round angle.

Has the advantages that:

the embodiment of the utility model provides a sleeve guider for cervical vertebra spinous process longitudinal cutting type spinal canal enlargement molding, which comprises a guide tube for guiding a sleeve; one end of the guide tube is an inlet for inserting the sleeve, and the other end of the guide tube is an extension port for extending the sleeve.

When specifically using, medical staff will carry out the preparation work with opening on patient's vertebra earlier, then medical staff transfers the guide tube to the opening part, the tip of guide tube can parallel insertion between vertebral plate and the dura mater, thereby fix the stable spinal column at the patient of guide tube, and when using, medical staff can adjust the mode of guide tube, make the guide tube withstand the vertebral plate, reduce the extrusion to the dura mater, then medical staff can insert the sleeve pipe between patient's vertebral plate and dura mater along the guide tube parallel, reduce the oppression to the dura mater, thereby reduce the risk that takes place spinal cord injury.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a first embodiment of a cannula guide for a longitudinal cutting spinal canal enlargement surgery of a cervical spinous process according to an embodiment of the present invention;

fig. 2 is a schematic view of a second embodiment of a cannula guide for a longitudinal cutting spinal canal enlargement surgery of a cervical spinous process according to an embodiment of the present invention;

fig. 3 is a schematic view of a third embodiment of a cannula guide for a longitudinal cutting type spinal canal enlargement molding operation of a cervical spinous process according to an embodiment of the present invention;

fig. 4 is a schematic view of the connection between the sleeve guide and the sleeve for the cervical spinous process longitudinal cutting type spinal canal enlargement molding provided by the embodiment of the present invention;

fig. 5 is a schematic view of the cannula guide for the cervical spinous process longitudinal cutting type spinal canal enlargement molding provided by the embodiment of the present invention in use;

fig. 6 is an oblique view of the cannula guide for the longitudinal cutting spinal canal enlargement operation according to the embodiment of the present invention.

Icon:

100-a guide tube; 110-an entry port; 120-extension port;

200-holding piece;

300-a handle;

400-window;

500-a cannula;

600-vertebral plate;

700-dura mater.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Referring to fig. 1, 2, 3, 4, 5 and 6, an embodiment of the present invention provides a cannula guide for a longitudinal cutting type spinal canal dilation of a cervical spinous process, including a guide tube 100 for guiding a cannula 500; one end of the guide tube 100 is an inlet port 110 into which the sleeve 500 is inserted, and the other end is an outlet port 120 from which the sleeve 500 extends; holding pieces 200 capable of abutting against the vertebral plate 600 are fixedly provided on both sides of the extension opening 120.

When the spinal canal is used specifically, medical staff firstly prepares for an opening on the spine of a patient, then the medical staff transfers the guide tube 100 to the opening, the holding piece 200 at the end part of the guide tube 100 is abutted against the vertebral plate 600 of the patient, the end part of the guide tube 100 can be inserted between the vertebral plate 600 and the dura mater 700 in parallel, so that the guide tube 100 is stably fixed on the spine of the patient, and when the spinal canal is used, the medical staff can adjust the mode of the guide device, so that the guide tube 100 is abutted against the vertebral plate 600, the extrusion to the dura mater 700 is reduced, then the medical staff can insert the sleeve 500 between the vertebral plate 600 and the dura mater 700 of the patient in parallel along the guide tube 100, the compression to the dura mater 700 is reduced, and the risk of spinal cord injury is reduced.

Specifically, when the medical staff uses the cannula guide for the cervical spinous process mediastinum vertebroplasty provided in the present embodiment, the medical staff inserts one end of the guide tube 100 into the vertebral plate 600 of the patient and extends the extension direction of the protrusion port 120 of the guide tube 100 in parallel with the vertebral plate 600 and the dura mater 700 of the patient.

Wherein, be provided with the piece 200 of holding outside the extension 120 of guide tube 100, when medical staff used the sleeve pipe guider who is used for cervical vertebra spinous process to indulge cutting type canalis vertebralis to enlarge the shaping art that this embodiment provided, medical staff can insert the piece 200 of holding of the tip of guide tube 100 between vertebral lamina 600 and dura mater 700 to make vertebral lamina 600 and the piece 200 butt of holding, thereby make to have certain extrusion force between piece 200 and vertebral lamina 600 of holding, and then improve the stability of the sleeve pipe guider who is used for the spinous process to indulge cutting type canalis vertebralis to enlarge the art that this example provided, be convenient for medical staff's subsequent operation.

It should be noted that, one end of the guide tube 100 is an inlet port 110, the other end is an outlet port 120, the medical staff inserts the sleeve 500 from the inlet port 110 of the guide tube 100 and then discharges from the outlet port 120 of the guide tube 100 when performing an operation, and the end of the guide tube 100 is inserted into the vertebral plate 600 and the outlet port 120 of the guide tube 100 extends in parallel with the vertebral plate 600 and the dura mater 700 when performing an operation, so that the guide tube 100 can advance in parallel with the vertebral plate 600 and the dura mater 700, and thus the injury of the dura mater 700 caused by the sleeve 500 can be avoided.

Referring to fig. 1-6, in an alternative to this embodiment, guide tube 100 is curved.

Specifically, the guide tube 100 is provided in a curved shape, and the extension direction of the inlet port 110 of the guide tube 100 is at an obtuse angle to the extension direction of the outlet port 120, so that the medical staff guides the sleeve 500 between the vertebral plate 600 and the dura mater 700.

Specifically, the guide tube 100 is continuously and smoothly curved, so that the guide tube 100 can smoothly guide the sleeve 500.

Referring to fig. 1-6, in an alternative to this embodiment, the inlet port 110 is funnel-shaped.

Specifically, the inlet opening 110 of the guide tube 100 is set to be funnel-shaped, so that the size of the inlet opening 110 of the guide tube 100 is enlarged, medical staff can conveniently insert the cannula 500 into the guide tube 100 in the operation process, and as the cannula 500 is inserted into the guide tube 100, the guide tube 100 can restrain and guide the insertion direction of the cannula 500, so that the cannula 500 is prevented from contacting the dura mater 700 in an acute angle direction in the insertion process, a component force in the pressing direction of the dura mater 700 is formed, the risk of spinal cord injury is increased, the cannula direction is guided, the cannula 500 can enter between the vertebral plate 600 and the dura mater 700 in parallel to the vertebral plate 600 and the dura mater 700 and advance along the guide direction of the guide, and the cannula 500 is prevented from causing injury to the dura mater 700 due to left-right shaking in the gradual insertion process of one point by one point.

Wherein, the size of the extension opening 120 and the tube body of the guide tube 100 is matched with the sleeve 500, so that after the sleeve 500 enters the guide tube 100 from the inlet opening 110, the sleeve 500 can not shake randomly and can penetrate out parallel to the vertebral plate 600 and the dura mater 700 according to the guiding direction.

Referring to fig. 1-6, in an alternative embodiment, a handle 300 is fixedly disposed on the guide tube 100.

Specifically, the handle 300 is arranged on the guide tube 100, the handle 300 is fixedly arranged on the guide tube 100, and through the arrangement of the handle 300, medical staff can conveniently hold the guide tube 100, so that the medical staff can conveniently adjust the position of the guide tube 100, the extension port 120 is maintained at the position of the highest point of the vertebral plate 600 and is parallel to the vertebral plate 600 and the dura mater 700, and a better foundation is provided for the parallel insertion of the subsequent cannula 500, thereby improving the operation effect.

In an alternative to this embodiment, the handle 300 is in the form of a flat sheet.

Specifically, the handle 300 is configured to be a flat sheet, and through such configuration, the medical staff can conveniently hold the handle 300 by two fingers, so as to control the guiding tube 100, thereby reducing the restriction on both hands of the medical staff, enabling the medical staff to do more things, and facilitating the medical staff to perform other operations.

In addition, the end of handle 300 distal to introducer tube 100 is configured as a drop so that the medical practitioner can grasp handle 300 with the thumb and forefinger to help maintain introducer tube 100 stable.

In an alternative of this embodiment, the handle 300 is provided with an anti-slip layer.

Specifically, the handle 300 is provided with the anti-slip layer, so that the phenomenon that the hands of medical staff are slippery can be reduced or even avoided through the arrangement of the anti-slip layer.

It should be noted that, a person skilled in the art can select the manner and material of the anti-slip layer according to actual situations, and details are not described herein.

Referring to fig. 1-6, in an alternative embodiment, a window 400 is formed in the guide tube 100, and medical personnel can view the mark on the cannula 500 inside the guide tube 100 through the Rongke 400.

Specifically, a window 400 is formed in the guide tube 100, and medical staff can observe the mark on the sleeve 500 in the guide tube 100 through the window 400, so as to know the length of the sleeve 500 inserted into the vertebral plate 600.

The window 400 formed on the guide tube 100 is close to the extension opening 120 of the guide tube 100, and the distance from the window 400 to the extension opening 120 can be set to be 5mm, 10mm, 15mm, etc., which can be set by a person skilled in the art according to actual conditions, and will not be described herein again, and the distance between the window 400 and the extension opening 120 is marked on the outer wall of the guide tube 100, so that when in use, medical staff can know the length from the window 400 to the extension opening 120.

It should be noted that when the medical staff inserts the sleeve 500 into the guiding tube 100 and then inserts the sleeve between the vertebral plate 600 and the dura mater 700 along the guiding tube 100, during the process of inserting the sleeve 500, the staff can observe the mark on the outer wall of the sleeve 500 through the window 400, and when the staff observes the mark, the length of the sleeve 500 inserted between the vertebral plate 600 and the dura mater 700 can be known.

The sleeve 500 is a finished product, the total length is 20cm, the outer wall is provided with identification rings at equal intervals, and the head is provided with one identification ring; a marking ring is arranged 5cm away from the head; a mark ring is arranged at a distance of cm from the head.

Referring to fig. 1-6, in an alternative embodiment, window 400 is a slotted kidney-shaped hole, and the slotted kidney-shaped hole extends in a direction perpendicular to the direction of extension of guide tube 100.

Specifically, the window 400 is formed as a kidney-shaped slot, and the extending direction of the slot is perpendicular to the extending direction of the guide tube 100, so that the medical staff can conveniently observe the cannula 500 inside the guide tube 100.

The length of the window 400 is set to be 2mm, so that medical staff can conveniently observe the sleeve 500 in the guide tube 100 on the premise of not influencing the strength of the guide tube 100; alternatively, the length of the window 400 is set to 3mm, so that medical staff can conveniently observe the cannula 500 in the guide tube 100 without affecting the strength of the guide tube 100.

In an alternative embodiment, the guiding tube 100 is made of transparent plastic tube, and the holding piece 200 is a plastic structure integrated with the guiding tube 100, so that the guiding tube is convenient to use and discard once.

Specifically, the guiding tube 100 may be a transparent plastic tube, and through such an arrangement, medical staff may directly and conveniently observe the position of the cannula in the guiding tube 100 on the basis of ensuring the structural strength of the guiding tube 100, without opening the window 400 on the guiding tube 100.

In an alternative to this embodiment, the grip tab 200 protrudes from the end of the guide tube 100; the edges of the holding piece 200 are rounded.

Specifically, the holding pieces 200 provided on both sides of the extension opening 120 of the guide tube 100 protrude from the end of the guide tube 100, so that the medical staff can easily bring the holding pieces 200 into contact with the vertebral plate 600.

Wherein, each edge of the holding piece 200 is set to be a round angle, so as to avoid the holding piece 200 from damaging the vertebral plate 600 and the dura mater 700.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (10)

1. A cannula introducer for cervical spinal longitudinal canaliculus dilatometry, comprising: a guide tube (100) for guiding the cannula (500);

one end of the guide tube (100) is an inlet (110) for inserting the sleeve (500), and the other end is an extension (120) for extending the sleeve (500).

2. The cannula guide for the longitudinal cutting type spinal canal dilatometry of cervical spinous process according to claim 1, characterized in that holding pieces (200) capable of abutting against the vertebral plate (600) are fixedly provided at both sides of the protruding opening (120).

3. The cannula guide for a longitudinal cutting vertebroplasty of cervical spinous processes according to claim 1, wherein the guide tube (100) is curved.

4. The cannula guide for a longitudinal laminoplasty of cervical spinous processes according to claim 1, wherein the access port (110) is funnel-shaped.

5. The cannula guide for the longitudinal cutting type spinal canal dilatometry of the spinous process of cervical spine according to claim 1, characterized in that a handle (300) is fixedly provided on the guide tube (100).

6. The cannula guide for a longitudinal resection spinal canal dilatometry of the spinous processes of cervical vertebrae according to claim 5, characterized in that said handle (300) is in the form of a flat plate;

an anti-slip layer is arranged on the handle (300).

7. The cannula guide for the longitudinal cutting type spinal canal dilatometry of the spinous process of cervical vertebra according to claim 1, characterized in that a window (400) is opened on the guide tube (100), and medical staff can observe the mark on the cannula (500) inside the guide tube (100) through the window (400).

8. The cannula guide for the longitudinal cutting type spinal canal dilatometry of cervical spinous process according to claim 7, wherein the window (400) employs a kidney-shaped slot, and the extension direction of the kidney-shaped slot is perpendicular to the extension direction of the guide tube (100).

9. The cannula guide for the longitudinal cutting type spinal canal dilatometry of the spinous process of cervical spine according to claim 8, characterized in that the guide tube (100) employs a transparent plastic tube.

10. The cannula guide for the longitudinal cutting type spinal canal dilatometry of cervical spinous process according to claim 2, characterized in that the grip tab (200) protrudes from the end of the guide tube (100);

the edge of the holding piece (200) is set to be a round angle.

Images