CN107616861A - The injecting apparatus of the injection-type gel bone renovating material of quantitative constant speed - Google Patents

Abstract

An injection device for quantitative and constant speed injection gel bone repair materials, including a syringe, an injection tube, an injection push rod and a quantitative and constant speed auxiliary injection structure, wherein the front end of the syringe is provided with an injection tube, and the interior of the syringe is provided with a Injection push rod, after the injection push rod, a quantitative and constant speed auxiliary injection structure is set to control the advance of the push rod; the quantitative and constant speed structure includes; Control the rotation speed and rotation time of the motor. The motor is connected to the front drive rod to control the speed and time of the front drive rod pressing down the push rod; and then to control the injection speed and injection volume; the quantitative fixed speed auxiliary injection structure is also equipped with an embedded rod and an intermediate connecting rod. A handle is also provided at the middle connecting rod, and the auxiliary injection structure is arranged on the injection cylinder by inserting the insertion rod into the insertion hole provided on the injection cylinder. The device of the above invention can achieve quantitative and fixed-speed injection of injectable materials, can improve the accuracy of injection, and reduce the difficulty of injection.

Description

Quantitative and fixed-speed injectable gel bone repair material injection device

technical field

The invention belongs to a medical device used in bone repair, in particular to a device for injecting an injection-type bone repair material, in particular to an injection device for a quantitative and constant-speed injection-type gel bone repair material.

Background technique

The phenomenon of large gaps due to bone loss due to osteoporosis, trauma, tumors, infections, and other diseases is called a bone defect. The vast majority of bone defects are difficult to heal on their own. Improper or untimely treatment can easily lead to nonunion, which brings many difficulties to the lives of patients. At present, the repair method of bone defect mainly adopts autologous bone transplantation or allogeneic bone transplantation. Because autologous bone has both osteoinductive activity and osteoconduction, and carries bone marrow cells with osteogenic effect, it is still recommended It is the "gold standard", but the source of autologous bone is limited, and bone extraction will increase the patient's additional pain; allogeneic bone has different degrees of immune rejection and has the potential risk of disease transmission; in recent years, various metals have also been used clinically Artificial bones made of polymer materials, ceramics, etc. can replace the defect site. However, the implantation of these materials has the potential to increase the amount of bone loss and cause damage to surrounding tissues. It also makes patients suffer from greater surgical trauma. And other shortcomings, so the clinical application is less.

At present, with the continuous progress of minimally invasive surgery technology and the development of injectable bone repair material technology, the use of minimally invasive surgery combined with injectable bone repair material to repair bone defects overcomes the shortage of completely artificial bone substitute materials, and greatly improves the operation efficiency. The safety and practicability of the operation are low, and the operation cost is low and the damage is small. Most of the injectable bone repair materials currently used clinically are temperature-sensitive gel materials, such as 201310627494.1, an injectable hollow hydroxyapatite microsphere/chitosan composite drug carrier material and its preparation method, which discloses After entering the human body, the composite drug carrier material will gel at body temperature to form a scaffold with a three-dimensional porous structure and play the role of bone conduction.

However, affected by the condition of the bone defect site, it is necessary to control the injection volume and injection speed to ensure the formation of an effective three-dimensional scaffold that matches the shape of the bone defect site. The current injection method uses ordinary injection equipment combined with narrow tube injection. The control of injection speed and injection volume depends entirely on the doctor's clinical experience, and the doctor also controls the direction of injection during the operation to ensure the accuracy of the injection position. However, the existing injection devices have high requirements on doctors and a large workload, and there are high errors, which will affect the recovery of patients. Therefore, there is a need for an injection device that can effectively control the injection volume and injection speed to solve the above technical problems.

The concept of the present invention aims at the problem that the injection volume and injection speed of existing bone repair material injection devices cannot be controlled, thereby affecting the operation effect, and provides an injection-type gel bone repair material with a reasonable structure and simple use of quantitative and fixed speed injection equipment.

Contents of the invention

In order to overcome the problem that the injection volume and injection speed of existing bone repair material injection devices cannot be controlled, thereby affecting the surgical effect, the present invention provides a quantitative and fixed-speed injection gel bone repair material injection device.

A quantitative and fixed-speed injection type gel bone repair material injection device, which includes an injection cylinder, an injection tube, an injection push rod and a quantitative and fixed-speed auxiliary injection structure, and is characterized in that an injection tube is arranged at the front end of the injection cylinder. An injection push rod is arranged inside the barrel, and an auxiliary injection structure for controlling the advance of the push rod is arranged behind the injection push rod.

Further, the quantitative and constant speed auxiliary injection structure includes: a power supply, a control structure, a front drive rod in contact with the injection push rod, and a motor, wherein the control structure controls the rotation speed and rotation time of the motor, and the motor is connected to the front drive rod to control the pressing down of the front drive rod The speed and time of the push rod; and then to control the injection speed and injection volume.

Further, the control structure includes a touch display screen, which includes a calculation module, through which the type of injection cylinder, injection speed and injection volume can be selected, and the calculation module can set the injection speed and injection time according to the information technology.

Further, both the front end of the front drive rod and the end of the push rod are provided with a ring structure with a circumference larger than that of the front drive rod and the push rod.

Further, an embedding groove is set on the injection barrel; an embedding rod is arranged on the fixed quantitative and constant speed auxiliary injection structure, and the embedding rod extends into the embedding groove; the embedding rod is connected to the control structure, power supply and motor at the rear end through the middle connecting rod; this setting It can effectively fix the quantitative and fixed speed auxiliary injection structure to the injection barrel, so that it can effectively control the moving speed and time when it is used. Further, the injection barrel of the embedded groove part is set in a square shape, and the embedded groove is surrounded by protruding pieces arranged on both sides of the square part. Further, the protruding piece is a protruding piece surrounding the square part. This arrangement can make the embedded rod have multiple entering squares. Further, the square part is a square part, and the square structure can make the setting more convenient. Further, the middle part of the outer edge of the protruding piece is provided with a blocking piece, which can ensure the closure of the insertion hole, thereby facilitating the insertion of the insertion rod; further, a locking structure is also provided after the insertion rod is inserted into the insertion hole, and the locking structure is locked. The structure can be set as any structure that can achieve the purpose of locking, wherein preferably, the locking structure is a tightening screw arranged on the outside of the blocking piece.

Further, the quantitative and fixed-speed auxiliary injection structure is also provided with a handle that can control the instrument. The setting of the handle can ensure the overall control of the device, can control the direction and position of the injection tube at the front end, and ensure the effective shaping of the injected gel material. Further, the handle is arranged on the middle connecting rod, and is arranged at a lower position in the middle of the middle connecting rod. This position can ensure the stability of the whole structure during the holding process.

Further, the front end of the front drive rod is set to surround the ring structure at the rear end of the push rod. This setting can realize the simultaneous operation of the two processes of liquid absorption and injection. Further, the enveloping structure is arranged on the ring structure of the front drive rod, and is arranged on the ring structure through the rotating rod, and rotated to a vertical position to surround the push rod ring during use.

Further, the first longitudinal gear is arranged on the rotating rod of the motor, and a second longitudinal gear is arranged beside the rotating rod, and the second longitudinal gear is arranged on the threaded rod, and the threaded rod is arranged in the threaded hole of the front drive rod; the motor rotates to drive the first gear to rotate, Gear 1 drives gear 2 to rotate, gear 2 drives the threaded rod to rotate, and the threaded rod rotates to achieve the purpose of retracting or extending the precursor rod; or, the longitudinal gear 2 is arranged in the threaded hole rod, and the threaded hole rod is provided with the precursor rod, and the threaded hole rod Threaded holes are arranged inside, and the rear end of the front drive rod is a threaded rod.

Further, a structure is provided to fix the position of the threaded rod or the threaded hole rod of the second longitudinal gear without affecting the rotation of the threaded rod or the threaded hole rod. The casing of the motor part is integrally connected, and the diameter of the hole of the baffle plate with holes is larger than the circumference of the threaded rod for the threaded rod to pass through, but smaller than the circumference of the gear 2, so as to achieve the purpose of fixing the position of the threaded rod without affecting the rotation.

Or on the upper side of the threaded rod or the threaded hole rod of the longitudinal gear 2, the upper shell of the quantitative and constant speed auxiliary injection structure is passed, and the upper shell is provided with a small hole for the threaded rod or the threaded hole rod of the longitudinal gear 2 to pass through, At the upper side and the lower side of the upper shell, a circular ring with a size larger than the size of the small hole is arranged on the threaded rod or the threaded hole rod where the longitudinal gear 2 is set. The setting of the circular ring can effectively ensure that the threaded rod of the longitudinal gear 2 is set Or the rotation of the threaded hole rod without changing the position.

Furthermore, a fixing ring protrudes vertically downward from the lower shell of the quantitative and constant speed auxiliary injection structure, and the fixing plates are arranged on both sides of the threaded rod, which can further ensure the positional stability of the threaded rod and the front drive rod.

Furthermore, a length adjustment section is provided at the front end of the front drive rod, and the setting of the adjustment section can ensure effective contact between the front drive rod and the push rod when the injection action occurs.

Alternatively, the control structure includes an injection button and an adjustment button, and the adjustment button is used to adjust the front rod to move to stop after contacting the push rod, and then realize the injection according to the set speed and time by turning on the injection button. Further, the injection button and the adjustment button are arranged on the touch screen. Touch settings are more convenient to operate.

Furthermore, an error reporting module is also set in the control structure, and the injection button cannot be turned on when the front drive rod is not in contact with the push rod, so as to prevent injection errors caused by wrong buttons.

Further, the power supply is a DC power supply, and a power supply slot is provided on the auxiliary injection structure for fixed quantity and speed for the DC power supply to be put in.

When using, first open the injection tube to the bone defect through a minimally invasive opening; then suck the injection liquid into the injection tube, and then set the quantitative and constant speed auxiliary injection structure next to the injection tube, and then set the injection volume and injection speed. Finally, press the adjustment button or adjust the adjustment section to adjust the contact between the front drive rod and the push rod; then turn on the injection button for injection, hold the handle during the injection process, and fine-tune the injection angle and position, and stop the operation when the belt reaches the injection volume.

Compared with the prior art, the injection device of the present invention can perform automatic quantitative and fixed-speed operation, and the hand-held handle provided on the side makes the whole operation process more streamlined and the field of vision becomes clearer.

Description of drawings

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

Fig. 2 is a structural schematic diagram of the longitudinal section of the overall structure of the present invention;

Fig. 3 is a structural schematic diagram of the auxiliary injection structure of the present invention with quantitative and constant speed;

Fig. 4 is a schematic diagram of the longitudinal section structure of the upper part of the auxiliary injection structure of quantitative and fixed speed according to the present invention;

Fig. 5 is a perspective structural schematic diagram of the upper longitudinal section of the auxiliary injection structure with quantitative and constant speed according to the present invention;

Fig. 6 is a structural schematic diagram of a longitudinal section of the threaded hole rod part of the present invention;

Fig. 7 is a schematic perspective view of the control structure of the present invention;

Fig. 8 is a schematic diagram of the structure of the square part of the present invention;

Fig. 9 is a schematic diagram of a perspective structure of a square part of the present invention;

Fig. 10 is a structural schematic diagram of the ring structure part of the present invention;

In the figure, 1. Injection cylinder; 11. Square part; 111. Protruding piece; 112. Blocking piece; 113. Embedding groove; 2. Injection tube; 3. Injection push rod; 41. DC power supply; 411. Power slot; 42. Control structure; 421. Display screen; 422. Calculation module; 423. Injection button; 424. Adjustment button; 425. Error reporting module; Rod; 44, motor; 441, gear one; 442, gear two; 45, embedded rod; 46, intermediate connecting rod; 47, handle; 48, threaded rod; 481, perforated baffle plate; 482, fixed ring; 5, Circular structure; 6. Shell.

detailed description

Example 1 An injection device for quantitative and constant-speed injection gel bone repair materials

An injection device for injecting gel bone repair materials with quantitative and constant speed, which includes an injection cylinder 1, an injection tube 2, an injection push rod 3 and a quantitative and constant speed auxiliary injection structure, wherein the front end of the injection cylinder 1 is provided with an injection tube 2, An injection push rod 3 is arranged inside the injection cylinder 1, and an auxiliary injection structure for controlling the advance of the push rod is arranged behind the injection push rod 3.

Quantitative and constant speed auxiliary injection structure includes: power supply, control structure 42, front drive rod 43 in contact with injection push rod 3, motor 44, wherein, control structure 42 controls the rotation speed and rotation time of motor 44, and motor 44 is connected with front drive rod 43 to control The speed and time at which the front drive rod 43 presses down on the push rod; thereby controlling the injection speed and injection volume.

The control structure 42 includes a touch screen 421, which includes a calculation module 422, through which the type of syringe 1, injection speed and injection volume can be selected, and the calculation module 422 can set the injection speed and injection time according to the information technology.

Both the front end of the front drive rod 43 and the end of the push rod are provided with a ring structure 5 with a circumference larger than that of the front drive rod 43 and the push rod.

An embedding groove 113 is set on the injection cylinder 1; an embedding rod 45 is arranged on the fixed quantitative and constant speed auxiliary injection structure, and the embedding rod 45 extends into the embedding groove 113; 44; This kind of setting can effectively fix the quantitative and constant speed auxiliary injection structure to the injection cylinder 1, so that it can effectively control the moving speed and time when it is used. The injection barrel 1 of the embedded groove 113 is set as a square, and the embedded groove 113 is surrounded by the protruding pieces 111 arranged on both sides of the square part, and the protruding pieces 111 are the protruding pieces 111 surrounding the square part. This setting can make the embedded rod 45 With multiple entry squares, the square structure can be more convenient for setup.

A handle 47 that can control the instrument is also arranged on the auxiliary injection structure of quantitative and fixed speed. The setting of the handle 47 can ensure the overall control of the device, can control the direction and position of the front injection tube 2, and ensure the effective shaping of the injected gel material. The handle 47 is arranged on the middle connecting rod 46, and is arranged at the lower position in the middle of the middle connecting rod 46. This position can ensure the stability of the whole structure during the holding process.

Longitudinal gear 1 441 is set on the motor 44 rotating rod, and a longitudinal gear 2 442 is arranged beside the rotating rod, and longitudinal gear 2 442 is arranged on the threaded rod 48, and threaded rod 48 is arranged in the threaded hole 432 of front drive rod 43; Rotate by motor 44 Drive gear one 441 to rotate, gear one 441 drives gear two 442 to rotate, gear two 442 drives threaded rod 48 to rotate, and threaded rod 48 rotates to reach the purpose that front drive rod 43 retracts or stretches out; Or, longitudinal gear two 442 is arranged on threaded hole rod In 433 , the threaded hole rod 433 is provided with a precursor rod 43 , and the threaded hole rod 433 is provided with a threaded hole 432 , and the rear end of the precursor rod 43 is a threaded rod 48 . A structure is provided to fix the position of the threaded rod 48 or the threaded hole rod 433 of the longitudinal gear 2 442 and does not affect the rotation of the threaded rod 48 or the threaded hole rod 433. The specific structure is that a baffle plate with a hole is respectively arranged on the upper and lower sides of the longitudinal gear 2 442 481, the baffle plate is integrally connected with the housing 6 of the motor 44, the aperture of the perforated baffle plate 481 is larger than the circumference of the threaded rod 48 for the threaded rod 48 to pass through, but smaller than the circumference of the second gear 442, reaching the position of the fixed threaded rod 48 Does not affect the purpose of turning.

The front end of the front drive rod 43 is provided with a length adjustment section, which can ensure effective contact between the front drive rod 43 and the push rod when the injection action takes place.

The power supply is a DC power supply 41, and the quantitative and constant speed auxiliary injection structure is provided with a power supply slot 411 for the DC power supply 41 to put in.

Example 2 An injection device for a quantitative and fixed-speed injection-type gel bone repair material

An injection device for injecting gel bone repair materials with quantitative and constant speed, which includes an injection cylinder 1, an injection tube 2, an injection push rod 3 and a quantitative and constant speed auxiliary injection structure, wherein the front end of the injection cylinder 1 is provided with an injection tube 2, An injection push rod 3 is arranged inside the injection cylinder 1, and an auxiliary injection structure for controlling the advance of the push rod is arranged behind the injection push rod 3.

Quantitative and constant speed auxiliary injection structure includes: power supply, control structure 42, front drive rod 43 in contact with injection push rod 3, motor 44, wherein, control structure 42 controls the rotation speed and rotation time of motor 44, and motor 44 is connected with front drive rod 43 to control The speed and time at which the front drive rod 43 presses down on the push rod; thereby controlling the injection speed and injection volume.

The control structure 42 includes a touch screen 421, which includes a calculation module 422, through which the type of syringe 1, injection speed and injection volume can be selected, and the calculation module 422 can set the injection speed and injection time according to the information technology.

Both the front end of the front drive rod 43 and the end of the push rod are provided with a ring structure 5 with a circumference larger than that of the front drive rod 43 and the push rod.

An embedding groove 113 is set on the injection cylinder 1; an embedding rod 45 is arranged on the fixed quantitative and constant speed auxiliary injection structure, and the embedding rod 45 extends into the embedding groove 113; 44; This kind of setting can effectively fix the quantitative and constant speed auxiliary injection structure to the injection cylinder 1, so that it can effectively control the moving speed and time when it is used. The syringe 1 in the part of the embedded groove 113 is arranged in a square shape, and the embedded groove 113 is surrounded by the protruding pieces 111 arranged on both sides of the square part. The protruding piece 111 is the protruding piece 111 around the square part. This arrangement can make the embedded rod 45 have multiple entry squares, and the square part is the square part 11. The square structure can make the setting more convenient. The middle part of the outer edge of the protruding sheet 111 is provided with a blocking sheet 112, which can ensure the closure of the embedding hole, and then facilitate the insertion of the embedding rod 45; a locking structure is also provided after the embedding rod 45 is inserted into the embedding hole, and the locking structure can It is set as any structure that can achieve the purpose of locking, wherein preferably, the locking structure is a tightening screw arranged on the outside of the blocking piece 112 .

A handle 47 that can control the instrument is also arranged on the auxiliary injection structure of quantitative and fixed speed. The setting of the handle 47 can ensure the overall control of the device, can control the direction and position of the front injection tube 2, and ensure the effective shaping of the injected gel material. The handle 47 is arranged on the middle connecting rod 46, and is arranged at the lower position in the middle of the middle connecting rod 46. This position can ensure the stability of the whole structure during the holding process.

Longitudinal gear 1 441 is set on the motor 44 rotating rod, and a longitudinal gear 2 442 is arranged beside the rotating rod, and longitudinal gear 2 442 is arranged on the threaded rod 48, and threaded rod 48 is arranged in the threaded hole 432 of front drive rod 43; Rotate by motor 44 Drive gear one 441 to rotate, gear one 441 drives gear two 442 to rotate, gear two 442 drives threaded rod 48 to rotate, and threaded rod 48 rotates to reach the purpose that front drive rod 43 retracts or stretches out; Or, longitudinal gear two 442 is arranged on threaded hole rod In 433 , the threaded hole rod 433 is provided with a precursor rod 43 , and the threaded hole rod 433 is provided with a threaded hole 432 , and the rear end of the precursor rod 43 is a threaded rod 48 . On the upper side of the threaded rod 48 or the threaded hole rod 433 of the longitudinal gear 2 442, pass through the upper shell of the quantitative constant speed auxiliary injection structure, and the threaded rod 48 or the threaded hole rod 433 of the longitudinal gear 2 442 is provided on the upper shell. Through the small hole, at the upper and lower positions of the upper shell, a circular ring with a size larger than the size of the small hole is set on the threaded rod 48 or the threaded hole rod 433 of the longitudinal gear 2 442. The setting of the circular ring can effectively Guarantee the rotation of the threaded rod 48 or the threaded hole rod 433 of the longitudinal gear 2 442 but no position change.

The control structure 42 includes an injection button 423 and an adjustment button 424. The adjustment button 424 is used to adjust the front drive rod 43 to move to stop after contacting the push rod, and then realize the injection according to the set speed and time by turning on the injection button 423. The injection button 423 and the adjustment button 424 are arranged on the touch screen. Touch settings are more convenient to operate.

An error reporting module 425 is also provided in the control structure 42, and the injection button 423 cannot be turned on when the front drive rod 43 is not in contact with the push rod, so as to prevent injection errors caused by wrong buttons.

The power supply is a DC power supply 41, and the quantitative and constant speed auxiliary injection structure is provided with a power supply slot 411 for the DC power supply 41 to put in.

Example 3 An injection device for quantitative and constant-speed injection gel bone repair materials

An injection device for injecting gel bone repair materials with quantitative and constant speed, which includes an injection cylinder 1, an injection tube 2, an injection push rod 3 and a quantitative and constant speed auxiliary injection structure, wherein the front end of the injection cylinder 1 is provided with an injection tube 2, An injection push rod 3 is arranged inside the injection cylinder 1, and an auxiliary injection structure for controlling the advance of the push rod is arranged behind the injection push rod 3.

Quantitative and constant speed auxiliary injection structure includes: power supply, control structure 42, front drive rod 43 in contact with injection push rod 3, motor 44, wherein, control structure 42 controls the rotation speed and rotation time of motor 44, and motor 44 is connected with front drive rod 43 to control The speed and time at which the front drive rod 43 presses down on the push rod; thereby controlling the injection speed and injection volume.

The control structure 42 includes a touch screen 421, which includes a calculation module 422, through which the type of syringe 1, injection speed and injection volume can be selected, and the calculation module 422 can set the injection speed and injection time according to the information technology.

Both the front end of the front drive rod 43 and the end of the push rod are provided with a ring structure 5 with a circumference larger than that of the front drive rod 43 and the push rod.

An embedding groove 113 is set on the injection cylinder 1; an embedding rod 45 is arranged on the fixed quantitative and constant speed auxiliary injection structure, and the embedding rod 45 extends into the embedding groove 113; 44; This kind of setting can effectively fix the quantitative and constant speed auxiliary injection structure to the injection cylinder 1, so that it can effectively control the moving speed and time when it is used. The syringe 1 in the part of the embedded groove 113 is arranged in a square shape, and the embedded groove 113 is surrounded by the protruding pieces 111 arranged on both sides of the square part. The protruding piece 111 is the protruding piece 111 around the square part. This arrangement can make the embedded rod 45 have multiple entry squares, and the square part is the square part 11. The square structure can make the setting more convenient. The middle part of the outer edge of the protruding sheet 111 is provided with a blocking sheet 112, which can ensure the closure of the embedding hole, and then facilitate the insertion of the embedding rod 45; a locking structure is also provided after the embedding rod 45 is inserted into the embedding hole, and the locking structure can It is set as any structure that can achieve the purpose of locking, wherein preferably, the locking structure is a tightening screw arranged on the outside of the blocking piece 112 .

A handle 47 that can control the instrument is also arranged on the auxiliary injection structure of quantitative and fixed speed. The setting of the handle 47 can ensure the overall control of the device, can control the direction and position of the front injection tube 2, and ensure the effective shaping of the injected gel material. The handle 47 is arranged on the middle connecting rod 46, and is arranged at the lower position in the middle of the middle connecting rod 46. This position can ensure the stability of the whole structure during the holding process.

The front end of the front drive rod 43 is set to surround the surrounding structure 431 of the circular ring structure 5 at the rear end of the push rod. This setting can realize the simultaneous operation of the two processes of liquid absorption and injection. The enveloping structure 431 is arranged on the ring structure 5 of the front driving rod 43, and is arranged on the ring structure 5 through the rotating rod, and rotates to a vertical position to surround the push rod ring during use.

Longitudinal gear 1 441 is set on the motor 44 rotating rod, and a longitudinal gear 2 442 is arranged beside the rotating rod, and longitudinal gear 2 442 is arranged on the threaded rod 48, and threaded rod 48 is arranged in the threaded hole 432 of front drive rod 43; Rotate by motor 44 Drive gear one 441 to rotate, gear one 441 drives gear two 442 to rotate, gear two 442 drives threaded rod 48 to rotate, and threaded rod 48 rotates to reach the purpose that front drive rod 43 retracts or stretches out; Or, longitudinal gear two 442 is arranged on threaded hole rod In 433 , the threaded hole rod 433 is provided with a precursor rod 43 , and the threaded hole rod 433 is provided with a threaded hole 432 , and the rear end of the precursor rod 43 is a threaded rod 48 .

A structure is provided to fix the position of the threaded rod 48 or the threaded hole rod 433 of the longitudinal gear 2 442 and does not affect the rotation of the threaded rod 48 or the threaded hole rod 433. The specific structure is that a baffle plate with a hole is respectively arranged on the upper and lower sides of the longitudinal gear 2 442 481, the baffle plate is integrally connected with the housing 6 of the motor 44, the aperture of the perforated baffle plate 481 is larger than the circumference of the threaded rod 48 for the threaded rod 48 to pass through, but smaller than the circumference of the second gear 442, reaching the position of the fixed threaded rod 48 Does not affect the purpose of turning.

The control structure 42 includes an injection button 423 and an adjustment button 424. The adjustment button 424 is used to adjust the front drive rod 43 to move to stop after contacting the push rod, and then realize the injection according to the set speed and time by turning on the injection button 423. The injection button 423 and the adjustment button 424 are arranged on the touch screen. Touch settings are more convenient to operate.

An error reporting module 425 is also provided in the control structure 42, and the injection button 423 cannot be turned on when the front drive rod 43 is not in contact with the push rod, so as to prevent injection errors caused by wrong buttons.

The power supply is a DC power supply 41, and the quantitative and constant speed auxiliary injection structure is provided with a power supply slot 411 for the DC power supply 41 to put in.

Example 4 An injection device for injection-type gel bone repair material with quantitative and constant speed

An injection device for injecting gel bone repair materials with quantitative and constant speed, which includes an injection cylinder 1, an injection tube 2, an injection push rod 3 and a quantitative and constant speed auxiliary injection structure, wherein the front end of the injection cylinder 1 is provided with an injection tube 2, An injection push rod 3 is arranged inside the injection cylinder 1, and an auxiliary injection structure for controlling the advance of the push rod is arranged behind the injection push rod 3.

Quantitative and constant speed auxiliary injection structure includes: power supply, control structure 42, front drive rod 43 in contact with injection push rod 3, motor 44, wherein, control structure 42 controls the rotation speed and rotation time of motor 44, and motor 44 is connected with front drive rod 43 to control The speed and time at which the front drive rod 43 presses down on the push rod; thereby controlling the injection speed and injection volume.

The control structure 42 includes a touch screen 421, which includes a calculation module 422, through which the type of syringe 1, injection speed and injection volume can be selected, and the calculation module 422 can set the injection speed and injection time according to the information technology.

Both the front end of the front drive rod 43 and the end of the push rod are provided with a ring structure 5 with a circumference larger than that of the front drive rod 43 and the push rod.

An embedding groove 113 is set on the injection cylinder 1; an embedding rod 45 is arranged on the fixed quantitative and constant speed auxiliary injection structure, and the embedding rod 45 extends into the embedding groove 113; 44; This kind of setting can effectively fix the quantitative and constant speed auxiliary injection structure to the injection cylinder 1, so that it can effectively control the moving speed and time when it is used. The syringe 1 in the part of the embedded groove 113 is arranged in a square shape, and the embedded groove 113 is surrounded by the protruding pieces 111 arranged on both sides of the square part. The protruding piece 111 is the protruding piece 111 around the square part. This arrangement can make the embedded rod 45 have multiple entry squares, and the square part is the square part 11. The square structure can make the setting more convenient. The middle part of the outer edge of the protruding sheet 111 is provided with a blocking sheet 112, which can ensure the closure of the embedding hole, and then facilitate the insertion of the embedding rod 45; a locking structure is also provided after the embedding rod 45 is inserted into the embedding hole, and the locking structure can It is set as any structure that can achieve the purpose of locking, wherein preferably, the locking structure is a tightening screw arranged on the outside of the blocking piece 112 .

A handle 47 that can control the instrument is also arranged on the auxiliary injection structure of quantitative and fixed speed. The setting of the handle 47 can ensure the overall control of the device, can control the direction and position of the front injection tube 2, and ensure the effective shaping of the injected gel material. The handle 47 is arranged on the middle connecting rod 46, and is arranged at the lower position in the middle of the middle connecting rod 46. This position can ensure the stability of the whole structure during the holding process.

The front end of the front drive rod 43 is set to surround the surrounding structure 431 of the circular ring structure 5 at the rear end of the push rod. This setting can realize the simultaneous operation of the two processes of liquid absorption and injection. The enveloping structure 431 is arranged on the ring structure 5 of the front driving rod 43, and is arranged on the ring structure 5 through the rotating rod, and rotates to a vertical position to surround the push rod ring during use.

Longitudinal gear 1 441 is set on the motor 44 rotating rod, and a longitudinal gear 2 442 is arranged beside the rotating rod, and longitudinal gear 2 442 is arranged on the threaded rod 48, and threaded rod 48 is arranged in the threaded hole 432 of front drive rod 43; Rotate by motor 44 Drive gear one 441 to rotate, gear one 441 drives gear two 442 to rotate, gear two 442 drives threaded rod 48 to rotate, and threaded rod 48 rotates to reach the purpose that front drive rod 43 retracts or stretches out; Or, longitudinal gear two 442 is arranged on threaded hole rod In 433 , the threaded hole rod 433 is provided with a precursor rod 43 , and the threaded hole rod 433 is provided with a threaded hole 432 , and the rear end of the precursor rod 43 is a threaded rod 48 .

A structure is provided to fix the position of the threaded rod 48 or the threaded hole rod 433 of the longitudinal gear 2 442 and does not affect the rotation of the threaded rod 48 or the threaded hole rod 433. The specific structure is that a baffle plate with a hole is respectively arranged on the upper and lower sides of the longitudinal gear 2 442 481, the baffle plate is integrally connected with the housing 6 of the motor 44, the aperture of the perforated baffle plate 481 is larger than the circumference of the threaded rod 48 for the threaded rod 48 to pass through, but smaller than the circumference of the second gear 442, reaching the position of the fixed threaded rod 48 Does not affect the purpose of turning.

A fixed ring 482 protrudes vertically downwards from the lower shell of the quantitative and constant speed auxiliary injection structure, and the fixed plates are arranged on both sides of the threaded rod 48 to further ensure the positional stability of the threaded rod 48 and the front drive rod 43 .

The control structure 42 includes an injection button 423 and an adjustment button 424. The adjustment button 424 is used to adjust the front drive rod 43 to move to stop after contacting the push rod, and then realize the injection according to the set speed and time by turning on the injection button 423. The injection button 423 and the adjustment button 424 are arranged on the touch screen. Touch settings are more convenient to operate. An error reporting module 425 is also provided in the control structure 42, and the injection button 423 cannot be turned on when the front drive rod 43 is not in contact with the push rod, so as to prevent injection errors caused by wrong buttons.

The power supply is a DC power supply 41, and the quantitative and constant speed auxiliary injection structure is provided with a power supply slot 411 for the DC power supply 41 to put in.

The above descriptions of the embodiments are only for the understanding of the present invention. It should be pointed out that those skilled in the art can make some improvements to the present invention without departing from the principles of the present invention, and these improvements will also fall within the protection scope of the claims of the present invention.

Claims (10)

1. An injection device of injection gel bone repair material with quantitative and constant speed, which comprises injection cylinder (1), injection tube (2), injection push rod (3) and auxiliary injection structure with quantitative and constant speed, characterized in that , the front end of the injection barrel (1) is provided with an injection tube (2), an injection push rod (3) is arranged inside the injection barrel (1), and an auxiliary injection structure for controlling the advance of the push rod is arranged behind the injection push rod (3). . 2. the injection apparatus of the injection type gel bone repair material of quantitative constant speed according to claim 1, is characterized in that, described quantitative constant speed structure comprises; Power supply, control structure (42), and injection push rod (3 ) contacted front drive rod (43), motor (44), wherein, control structure (42) controls the rotation speed and the rotation time of motor (44), and motor (44) connects front drive rod (43) to control the front drive rod (43) The speed and time of pressing the push rod. 3. The injection device of the injection-type gel bone repair material with quantitative and constant speed according to claim 2, characterized in that, the control structure (42) includes a touch display screen (421), and includes a calculation module (422) inside, Select the injection cylinder (1) type, injection speed and injection volume by touching the display screen (421), and the calculation module (422) sets the injection speed and injection time according to the information technology. 4. The injection device of the injection-type gel bone repair material with quantitative and constant speed according to claim 1, characterized in that, an embedding groove (113) is set on the injection barrel (1); The embedded rod (45), the embedded rod (45) stretches in the embedded groove (113); the embedded rod (45) connects the control structure (42), power supply and motor (44) at the rear end through the middle connecting rod (46). 5. The injection device of the injection-type gel bone repair material of quantitative and constant speed according to claim 4, characterized in that, the injection barrel (1) of the embedded groove (113) part is set to a square shape, and the embedded groove (113) ) is a hole slot arranged between the protruding pieces (111) on both sides of the square part. 6. The injection device of the injection-type gel bone repair material with quantitative and constant speed according to claim 4, characterized in that, the locking structure is arranged after the embedding rod (45) is inserted into the embedding hole, and the locking structure includes the A small segment of thread provided at the end of the embedded rod (45) is arranged on a screw whose outer diameter at the thread is greater than the distance between the two protruding pieces (111). 7. The injection device for injection-type gel bone repair material with quantitative and fixed speed according to claim 1, characterized in that, the fixed and fixed speed structure is further provided with a handle (47) that can control the device. 8. An injection device for quantitative and constant-velocity injection-type gel bone repair material according to claim 2, characterized in that, the front end of the front drive rod (43) is provided with a wrap around the rear end of the push rod. winding structure (431). 9. According to any one of claim 2, the injection device of the injection-type gel bone repair material with quantitative and constant speed is characterized in that, a longitudinal gear one (441) is arranged on the rotating rod of the motor (44), and the rotating rod A longitudinal gear two (442) is arranged beside, and the longitudinal gear two (442) is arranged on the threaded rod (48), and the threaded rod (48) is arranged in the threaded hole (432) of the front drive rod (43); through the motor (44) Rotation drives gear one (441) to rotate, and gear one (441) drives gear two (442) to rotate, and gear two (442) drives threaded rod (48) to rotate, and threaded rod (48) rotates to reach front drive rod (43) to retract or extend. The purpose of going out; A fixed threaded rod (48) position is also provided with a structure that does not affect the rotation of the threaded rod (48). 10. The injection device of injection-type gel bone repair material with quantitative and constant speed according to claim 2, characterized in that, the control structure (42) includes an injection button (423) and an adjustment button (424), and the adjustment The button (424) is used to adjust the front drive rod (43) to move to stop after contacting the push rod, and then realize the injection according to the set speed and time by opening the injection button (423).