CN211583456U

CN211583456U - Device for directionally and continuously injecting bone cement

Info

Publication number: CN211583456U
Application number: CN201922168967.1U
Authority: CN
Inventors: 黄子钧; 于海龙; 张猛; 赵予辉; 顾洪闻
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-09-29
Anticipated expiration: 2029-12-06

Abstract

The utility model relates to a device for injecting bone cement directionally and continuously, a sleeve body is of a hollow structure, a sleeve handle is arranged at the upper end of the sleeve body, a sleeve through hole communicated with the interior of the sleeve body is arranged on the sleeve handle, and the sleeve body is inserted into the injured vertebra position in the operation; the channel body is of a hollow structure with a closed lower end, the upper end of the channel body is provided with a channel handle, the channel handle is provided with a channel through hole communicated with the interior of the channel body, the side wall of the channel body close to the end part of the lower end is provided with an injection hole, and the channel handle is provided with a direction mark A corresponding to the injection hole; the inner core main body is of a hollow structure, a knob is arranged at the upper end of the inner core main body, an opening is formed in the side wall of the lower end of the inner core main body, and a direction mark B corresponding to the opening is arranged on the knob; the injection tube is of a hollow structure, an injection port at the lower end of the injection tube is communicated with the interior of the inner core main body through a connecting tube, and the pushing injection rod is inserted in the injection tube. The utility model discloses can realize pushing bone cement to the side rear in succession to adjust the filling opening orientation according to the direction sign.

Description

Device for directionally and continuously injecting bone cement

Technical Field

The utility model belongs to the field of medical equipment, specifically speaking is a device that is used for directional continuous injection bone cement.

Background

Vertebral compression fracture is the most common complication of osteoporosis patients, and Percutaneous Vertebroplasty (PVP) and Percutaneous Kyphoplasty (PKP) are the most common minimally invasive methods for treating the osteoporotic vertebral compression fracture at present. The percutaneous puncture working channel directly injects or injects the mixed bone cement into the injured vertebral body after the balloon is used for expansion in advance so as to achieve the treatment purposes of strengthening the vertebral body, relieving pain, recovering the height of the vertebral body, preventing the injured vertebral body from progressive compression degeneration, correcting kyphosis and the like.

At present, most bone cement injection devices directly inject bone cement pre-filled in a working channel into a damaged vertebral body through a push rod, and the problem that the push rod and the working channel are too long after being combined when a kit is combined exists, so that the perspective of a C-shaped arm X-ray machine in an operation is influenced. Due to the gravity action of the push rod, the blending viscosity of the bone cement and other factors, when the combined external member is put into the combined external member, the bone cement is pushed out from the injection port of the working channel in an uncontrolled manner by a small amount, so that the bone cement is not completely dispersed to an ideal position. Due to the limitation of the inner volume of the working channel, a plurality of working channels need to be prepared for pre-filling bone cement in the operation, which not only causes material waste, but also wastes precious optimal bone cement injection time due to the replacement of the combined working channel for many times, and influences the operation effect. Meanwhile, when the bone cement in the working channel is not required to be completely pushed in, the problems that the bone cement in the tube is not easy to be separated from the bone cement in the operation area after the bone cement is solidified, the sleeve is not easy to pull out and the like exist; if the bone cement working channel which is not injected completely is replaced in the operation, the uncured bone cement remains in the pedicle channel and under the skin, and unnecessary tissue damage is caused.

At present, most bone cement working channels are opened forwards, and the bone cement leakage and other serious consequences are caused by factors such as the fact that vertebral bone is seriously damaged, the local pressure is excessively increased due to too fast bone cement pushing, the bone cement dispersion direction is not controlled, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a device for injecting bone cement directionally and continuously. The device can realize the directional continuous bone cement injection operation in the operation and has the function of leakage prevention.

The purpose of the utility model is realized through the following technical scheme:

the utility model comprises a working sleeve, a working channel, a channel inner core, an injector and a connecting pipe, wherein the working sleeve comprises a sleeve handle and a sleeve body, the sleeve body is of a hollow structure, the upper end of the sleeve handle is provided with the sleeve handle, the sleeve handle is provided with a sleeve through hole communicated with the interior of the sleeve body, and the sleeve body is inserted into the injured vertebra position in the operation; the working channel comprises a channel handle and a channel body, the channel body is of a hollow structure with the lower end closed, the channel handle is arranged at the upper end of the channel body, a channel through hole communicated with the interior of the channel body is formed in the channel handle, an injection opening is formed in the side wall of the channel body close to the end part of the lower end, and a direction mark A corresponding to the injection opening is arranged on the channel handle; the channel inner core comprises a knob and an inner core main body, the inner core main body is of a hollow structure, the knob is arranged at the upper end, an opening is formed in the side wall of the lower end, and a direction mark B corresponding to the opening is arranged on the knob; the injection device comprises an injection rod and an injection tube, the injection tube is of a hollow structure and is used for injecting bone cement, an injection port at the lower end of the injection tube is communicated with the interior of the inner core main body through the connecting tube, and the injection rod is inserted in the injection tube.

Wherein: the length of the channel body is equal to that of the inner core main body and is greater than that of the sleeve body, and the injection port and the opening are exposed from the lower end of the sleeve body when bone cement is injected in an operation.

The injection port is formed along the length direction in an inward inclined mode.

The channel handle is provided with a protrusion, the knob is provided with a fixture block, the lower surface of the fixture block is provided with a groove, and when the injection opening rotates to coincide with the opening, the protrusion is inserted into the groove.

The two bulges are uniformly distributed along the circumferential direction; the two clamping blocks are uniformly distributed along the circumferential direction; when the injection opening is rotated to coincide with the opening or differ by 180 °, each of the projections is inserted into one of the grooves.

When the injection port rotates to coincide with the opening, the direction mark A and the direction mark B are collinear.

The rotary knob is provided with a spiral connector, the connecting pipe comprises a hose, a large connector and a small connector, the large connector and the small connector are arranged at two ends of the hose, the large connector is in threaded connection with the spiral connector, and the small connector is in threaded connection with the injection port.

The outer surface of the upper end of the channel body is provided with a scale A used for measuring the depth of the sleeve pushing body along the length direction.

The outer surface of the injection pipe is provided with scales B used for displaying the pushed bone cement amount along the length direction.

The working sleeve, the working channel and the channel inner core are all in a T shape, the transverse edges and the vertical edges of the T shape of the working sleeve and the working channel are all cylinders, the transverse edges of the T shape of the channel inner core are knobs, and the vertical edges are cylinders; the outer diameter of the inner core main body is equal to the inner diameter of the channel body and is tightly attached to the channel body when being pushed, and the outer diameter of the channel body is equal to the inner diameter of the sleeve body and is tightly attached to the sleeve body when being pushed.

The utility model discloses an advantage does with positive effect:

the utility model discloses a work sleeve pipe is the direction of working channel and puts into the device, and working channel is equipped with from top to bottom the inward sloping filling opening, and bone cement pours into the direction and is the side rear, is equipped with obvious direction sign corresponding with the filling opening direction at the passageway handle end; the working channel is internally provided with a hollow channel inner core, and the opening and closing state of the injection opening can be freely adjusted in a rotating way; the utility model discloses still be equipped with supporting connecting pipe and push injector, can realize the operation is pushed to directional continuous bone cement in the art to have the antiseep effect. The method specifically comprises the following steps:

1. the utility model discloses can realize pushing bone cement in succession to the side rear to adjust the filling opening orientation according to the direction sign, avoided traditional distolateral opening to pour into the problem that bone cement can't control the bone cement and pour into the direction into.

2. The utility model adopts the injection device to inject the bone cement, thereby avoiding the influence of the gravity factor of the injection rod on the injection of the bone cement; the injection tube has large capacity, can meet the requirement of single continuous injection amount of the bone cement, and avoids the time for repeatedly replacing the working channel filled with the bone cement in the operation.

3. The utility model discloses can in time read bone cement injection volume according to the injection syringe scale, avoid because of injecting into the bone cement seepage that too much too fast arouses.

4. The utility model discloses innovated the switch setting of filling opening, can pour into the satisfied time at bone cement, under the condition of unmovable working channel, closed the filling opening, effectively cut off art district bone cement and intraductal bone cement.

5. The utility model discloses the bayonet socket setting of passageway inner core knob both sides can guarantee the stability of filling opening "open"/"close" state, guarantees to operate reliably.

6. The utility model discloses a connecting pipe is connected and is pushed annotating ware and work external member, has avoided influencing putting of perspective machine in the art because of the work subassembly overlength.

7. The utility model discloses the connecting pipe both ends joint is the screw thread rotation and fixes, avoids bone cement to inject the in-process, because of the too big connector obscission problem that leads to of pressure.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the working sleeve of the present invention;

FIG. 3A is a schematic structural view of the working channel of the present invention;

FIG. 3B is a partial enlarged view of the lower end of the working channel of the present invention;

FIG. 4 is a schematic structural view of the channel core of the present invention;

FIG. 5 is a schematic structural view of the syringe of the present invention;

FIG. 6 is a schematic structural view of the connecting tube of the present invention;

wherein: the device comprises a working sleeve 1, a sleeve handle 101, a sleeve body 102, a working channel 2, a channel handle 201, a scale A202, a channel body 203, an injection port 204, a direction mark A205, a protrusion 206, a channel inner core 3, a knob 301, a fixture block 302, an inner core main body 303, an opening 304, a screw connector 305, a direction mark B306, an injector 4, an injection rod 401, an injection tube 402, an injection port 403, a scale B404, a connecting tube 5, a large joint 501, a hose 502 and a small joint 503.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-2, fig. 3A-3B and fig. 4-6, the utility model discloses a working sleeve 1, working channel 2, passageway inner core 3, injecting ware 4 and connecting pipe 5, wherein the working sleeve includes sleeve handle 101 and sleeve body 102, this sleeve body 102 is hollow structure, the upper end is equipped with sleeve handle 101, set up the sleeve pipe through-hole that is linked together with sleeve body 102 inside on sleeve handle 101, this sleeve body 102 inserts the injured vertebra position in the art, sleeve handle 101 is arranged in the direction of working channel 2 and puts into in the art. The working channel 2 comprises a channel handle 201 and a channel body 203, the channel body 203 is a hollow structure with a closed lower end, the channel handle 201 is arranged at the upper end, a channel through hole communicated with the interior of the channel body 203 is formed in the channel handle 201 and used for being inserted into the inner core main body 303, and the channel handle 201 is used for operating the working channel 2 in operation and performing insertion and direction adjustment; an injection port 204 is formed on the side wall of the channel body 203 close to the lower end, and a direction mark A205 corresponding to the injection port 204 is arranged on the outer side surface of the channel handle 201. The channel inner core 3 comprises a knob 301 and an inner core main body 303, the inner core main body 303 is a hollow structure, the knob 301 is arranged at the upper end, an opening 304 is formed in the side wall of the lower end, and a direction mark B306 corresponding to the opening 304 is arranged on the knob 301. The injector 4 includes an injection rod 401 and an injection tube 402, the injection tube 402 is a hollow structure and is used for injecting bone cement, an injection port 403 with external threads is arranged at the lower end of the injection tube 402, the injection port 403 is communicated with the inside of the inner core main body 303 through a connecting tube 5, and the injection rod 401 is inserted into the injection tube 402.

The working sleeve 1 of the embodiment is in a T shape, the transverse edge and the vertical edge of the T shape are both cylinders, and the material can be stainless steel; the sleeve body 102 is a hollow cylindrical pipe with uniform thickness, the sleeve handle 101 is a cylindrical pipe, and the upper end of the sleeve body 102 is positioned in the middle of the sleeve handle 101 and communicated with a sleeve through hole formed in the middle of the sleeve handle 101. The working sleeve 1 serves for guiding the working channel 2 in.

The working channel 2 of this embodiment is "T" shape, and the horizontal limit and the perpendicular limit of this "T" shape are the cylinder, and the material can be stainless steel, and the passageway body 203 is the even cylinder pipe of hollow thickness. The channel handle 201 is provided with two protrusions 206, the two protrusions 206 of the embodiment are uniformly distributed along the circumferential direction of the periphery of the channel through hole, that is, the connecting line between the two protrusions 206 is parallel to the axial center line of the channel handle 201, is perpendicularly intersected with the axial center line of the channel body 203, passes through the center of the channel through hole, and the projection of the direction mark a205 on the vertical plane is located between the two protrusions 206. The outer surface of the upper end of the channel body 203 is provided with a scale A202 (unit is 1mm) along the length direction, and the depth of the channel body 203 pushed into the sleeve body 102 can be measured. The injection port 204 at the lower end of the channel body 203 is formed in an inward inclined manner along the length direction, so that bone cement is dispersed to the rear side in the injection process. The channel handle 201 is a cylindrical pipe, the upper end of the channel body 203 is located in the middle of the channel handle 201 and communicated with a channel through hole formed in the middle of the channel handle 201, and the channel through hole is matched with the inner diameter of the channel body 203 and used for pushing the inner core main body 303.

The channel inner core 3 of the embodiment is in a T shape, the transverse edge of the T shape is a knob 301, and the vertical edge is a cylinder; the knob 301 is provided with a fixture block 302, the lower surface of the fixture block 302 is provided with a groove, when the injection port 204 is rotated to coincide with the opening 304, the protrusion 206 is inserted into the groove, so that the fixture block 302 is tightly fixed with the protrusion 206. The number of the two fixture blocks 302 in this embodiment is one-to-one corresponding to the protrusions 206, and the projection of the direction mark B306 on the vertical plane is located at the middle position of the two fixture blocks 302. The knob 301 is provided with a screw interface 305 for connecting with the connecting pipe 5, the center of the screw interface 305 is provided with a hole, and the diameter of the hole is the same as the inner diameter of the inner core main body 303. When the injection port 204 is rotated to coincide with the opening 304, it is in an "on" state; when the injection port 204 is rotated 180 ° from the opening, it is in an "off" state; an "on" state and an "off" state, each protrusion 206 being inserted into one of the grooves; when in the "on" state, direction indicator a205 is collinear with direction indicator B306; when in the "off" state, the direction indicator a205 is 180 ° different from the direction indicator B306.

The outer surface of the syringe 402 of this embodiment is provided with a scale B404 (unit is 0.2ml, 10ml in total) along the longitudinal direction, and the pushed amount of the bone cement can be read at any time. The injection rod 41 is used for injection of bone cement. The maximum volume in the injection tube 42 is about 10ml, which can meet the continuous injection operation of single bone cement,

the connection tube 5 of this embodiment includes a flexible tube 502, and a large joint 501 and a small joint 503 at two ends of the flexible tube 502, the flexible tube is made of a medical heat-resistant plastic material, the large joint 501 is screwed with the screw interface 305, and the small joint 503 is screwed with the injection port 403.

The channel body 203 of this embodiment has the same length as the core main body 303 and is longer than the sleeve body 102, and the injection port 204 and the opening 304 are exposed from the lower end of the sleeve body 102 when bone cement is injected during the operation. The outer diameter of the inner core main body 303 of the present embodiment is equal to the inner diameter of the passage body 203 and is tightly attached when being pushed in, and the outer diameter of the passage body 203 is equal to the inner diameter of the sleeve body 102 and is tightly attached when being pushed in.

The utility model discloses a theory of operation does:

when bone cement injection operation is needed in an operation, the working sleeve 1 needs to be punctured and placed in advance, and after the position is satisfied in X-ray fluoroscopy in the operation, the connected working assembly is inserted. The method specifically comprises the following steps:

after bone cement is poured into the injection tube 402, the injection rod 401 is inserted, the connecting tube 5 is used for connecting the injector 4 and the spiral connector 305 of the channel inner core 3, after the connection is firm, the channel inner core 3 is inserted into the channel body 203 of the working channel 2, the knob 301 is rotated until the direction mark B306 and the direction mark A205 are collinear, namely, the knob is rotated to the 'open' state, the opening 304 is overlapped with the injection port 204, the bulge 206 is inserted into the groove of the fixture block 302, and the fastening is checked to be firm; the injection rod 401 is pushed, the inner core main body 303 is filled with bone cement, after the bone cement is smoothly pushed out from the injection port 24, the knob 301 is rotated until the difference between the direction mark B306 and the direction mark A205 is 180 degrees, and the difference between the opening 304 and the injection port 204 is 180 degrees, namely, the knob is rotated to be in an off state, and after the buckle is checked to be firm, the channel body 203 is inserted into the sleeve pipe body 102. And (3) observing the scale B206 on the upper end of the inner core main body 303, repeatedly performing perspective observation to a proper position, rotating the knob 301 to an on state, and completing bone cement injection operation under the perspective observation in the operation.

When the bone cement is uniformly dispersed in the perspective view in the operation and the satisfactory operation effect is achieved, the knob 301 is rotated to the off state to separate the bone cement in the tube from the bone cement in the operation area, and after the bone cement is solidified, the channel inner core 3, the working channel 2 and the working sleeve 1 are sequentially drawn out. The operation is completed.

The utility model discloses can realize that bone cement's orientation is pushed in succession, not only save operation time, reduce the perspective number of times, especially design of pushing to the rear side has greatly reduced traditional bone cement and has directly released by the distolateral side and easily cause bone cement to push too fast, dispersion direction uncontrollable, local pressure is big, compression fracture resumes unsatisfactory, the easy seepage scheduling problem of bone cement.

Claims

1. A device for the directed continuous bolus injection of bone cement, characterized by: the device comprises a working sleeve (1), a working channel (2), a channel inner core (3), an injector (4) and a connecting pipe (5), wherein the working sleeve comprises a sleeve handle (101) and a sleeve body (102), the sleeve body (102) is of a hollow structure, the upper end of the sleeve handle (101) is provided with the sleeve handle, a sleeve through hole communicated with the interior of the sleeve body (102) is formed in the sleeve handle (101), and the sleeve body (102) is inserted into a damaged vertebra position in an operation; the working channel (2) comprises a channel handle (201) and a channel body (203), the channel body (203) is of a hollow structure with a closed lower end, the channel handle (201) is arranged at the upper end of the channel body, a channel through hole communicated with the interior of the channel body (203) is formed in the channel handle (201), an injection opening (204) is formed in the side wall of the channel body (203) close to the end part of the lower end, and a direction mark A (205) corresponding to the injection opening (204) is arranged on the channel handle (201); the channel inner core (3) comprises a knob (301) and an inner core main body (303), the inner core main body (303) is of a hollow structure, the knob (301) is arranged at the upper end of the inner core main body, an opening (304) is formed in the side wall of the lower end of the inner core main body, and a direction mark B (306) corresponding to the opening (304) is arranged on the knob (301); the injection device (4) comprises an injection rod (401) and an injection tube (402), the injection tube (402) is of a hollow structure and is used for injecting bone cement, an injection port (403) at the lower end of the injection tube (402) is communicated with the interior of the inner core main body (303) through the connecting tube (5), and the injection rod (401) is inserted into the injection tube (402).

2. The device for the directed continuous bolus of bone cement of claim 1, wherein: the channel body (203) and the inner core main body (303) have the same length and are larger than the length of the sleeve body (102), and the injection port (204) and the opening (304) are exposed from the lower end of the sleeve body (102) when bone cement is injected in an operation.

3. The device for the directed continuous bolus of bone cement of claim 1, wherein: the injection port (204) is formed along the length direction and is inclined inwards.

4. The device for the directed continuous bolus of bone cement of claim 1, wherein: the channel handle (201) is provided with a protrusion (206), the knob (301) is provided with a fixture block (302), the lower surface of the fixture block (302) is provided with a groove, and when the injection port (204) rotates to be overlapped with the opening (304), the protrusion (206) is inserted into the groove.

5. The device for the directed continuous bolus of bone cement of claim 4, wherein: the two bulges (206) are uniformly distributed along the circumferential direction; the number of the clamping blocks (302) is two, and the clamping blocks are uniformly distributed along the circumferential direction; when the injection opening (204) is rotated to coincide with or be 180 DEG out of phase with the opening (304), each projection (206) is inserted into one groove.

6. The device for the directed continuous bolus of bone cement of claim 1, wherein: when the injection port (204) is rotated to coincide with the opening (304), the orientation mark A (205) is collinear with the orientation mark B (306).

7. The device for the directed continuous bolus of bone cement of claim 1, wherein: the rotary knob (301) is provided with a spiral connector (305), the connecting pipe (5) comprises a hose (502), a large connector (501) and a small connector (503) which are arranged at two ends of the hose (502), the large connector (501) is in threaded connection with the spiral connector (305), and the small connector (503) is in threaded connection with the injection port (403).

8. The device for the directed continuous bolus of bone cement of claim 1, wherein: the outer surface of the upper end of the channel body (203) is provided with a scale A (202) used for measuring the depth of the inside of the push sleeve body (102) along the length direction.

9. The device for the directed continuous bolus of bone cement of claim 1, wherein: the outer surface of the injection tube (402) is provided with a scale B (404) used for displaying the pushed bone cement amount along the length direction.

10. The device for the directed continuous bolus of bone cement of claim 1, wherein: the working sleeve (1), the working channel (2) and the channel inner core (3) are all in a T shape, the transverse edges and the vertical edges of the T shape of the working sleeve (1) and the working channel (2) are all cylinders, the transverse edges of the T shape of the channel inner core (3) are knobs (301), and the vertical edges are cylinders; the outer diameter of the inner core main body (303) is equal to the inner diameter of the channel body (203) and is tightly attached when being pushed in, and the outer diameter of the channel body (203) is equal to the inner diameter of the sleeve body (102) and is tightly attached when being pushed in.