CN216797759U - Flexible stone crushing impact device - Google Patents

Abstract

The utility model discloses a flexible stone-breaking impact device which comprises a flexible pipe, wherein a driving mechanism is fixed at the far end of the flexible pipe, a cable of the driving mechanism penetrates through the flexible pipe and is connected with a control switch, the output end of the driving mechanism is connected with a stone-breaking part, and the stone-breaking part makes linear reciprocating motion towards the extending direction of the flexible pipe. The flexible tube is convenient to bend, can be inserted by utilizing a guide sheath or a channel of an endoscope, can realize minimally invasive ballistic impact on broken stone, can greatly reduce the wound of a patient, reduces the risk of infection and improves the safety of the operation. Moreover, the flexible tube can be placed into the corners of the intestines and stomach or the renal pelvis, so that the stone can be crushed in various corners, and the stone crushing effect is better. Utilize actuating mechanism to drive the reciprocal stone that strikes of rubble portion and carry out the rubble, efficient wound is little, does not need extra auxiliary assembly to instruct, and the expense is still less, and is more friendly to patient.

Description

Flexible stone crushing impact device

Technical Field

The utility model relates to the field of medical equipment, in particular to a flexible impact stone breaking device.

Background

Urinary calculus is a general term for kidney, ureter and bladder calculus, and urinary calculus can cause urinary tract injury, obstruction and complicated infection, so that renal function is damaged, and great pain is brought to patients. At present, the international treatment method for urinary calculus is mainly divided into a laser lithotripsy technology, an air pressure trajectory technology or an external ultrasonic lithotripsy technology, but the methods have respective defects, and after the lithotripsy is performed by using laser surgery, the urethra of a patient is easy to be narrowed due to the fact that the human body is burnt by the laser at high temperature; the external ultrasonic lithotripsy has sequelae that the inner wall of the bladder of a patient is easy to bleed or inflame due to the shock wave effect, but the lithotripsy cannot be bent by using an air pressure trajectory, only a channel can be established by a percutaneous kidney, the wound is large, and the lithotripsy is difficult to be carried out by contacting stones in bent corners.

SUMMERY OF THE UTILITY MODEL

To overcome at least one of the above-mentioned problems of the prior art, the present invention provides a flexible percussive rock breaking device that can be bent and inserted into an endoscope or guide sheath without the need for percutaneous access opening.

The utility model provides a flexible impact rubble device, including the flexible tube, the near-end of flexible tube is fixed with actuating mechanism, and the distal end of flexible tube is provided with rubble portion, and actuating mechanism's cable passes and is connected with control switch from the flexible tube, and actuating mechanism's output is connected with flexible transmission shaft, flexible transmission shaft's distal end with rubble portion connects, and rubble portion is straight reciprocating motion towards the extending direction of flexible tube.

The flexible impact stone breaking device at least has the following beneficial effects: the flexible tube can be bent and can be directly inserted into a guide sheath or a working channel of an endoscope, minimally invasive ballistic impact lithotripsy can be realized, wounds of patients can be greatly reduced, infection risks are reduced, and operation safety is improved. And the bent flexible tube can enter into the corners of the intestines and stomach or the renal pelvis to smash various stones in the corners, so that the stone smashing effect is better. The driving mechanism is arranged at the rear, the power of the driving mechanism is transmitted by the flexible transmission shaft, the size of the far end of the flexible pipe can be reduced, and the flexible pipe can be more conveniently inserted into a small-sized working channel.

In some embodiments of the above-mentioned flexible impact rubble device, actuating mechanism includes linear electric motor, flexible transmission shaft is the spool that can transmit the impact, and linear electric motor can carry out reciprocal impact automatically, and the technology is mature moreover, can reach the miniaturization, has reduced the size of rubble device greatly, and linear electric motor's frequency is high moreover, and impact efficiency is big, can quick rubble.

In some embodiments of the above flexible percussive rock breaking apparatus, an elastic member is disposed within the flexible tube, the elastic member being located at a distal end of the flexible tube, and the rock breaking portion is connected to the elastic member, the elastic member causing the rock breaking portion to have a tendency to move toward the distal end of the flexible tube. The elastic piece can increase pulling force for flexible transmission shaft keeps the tensioning, transmits actuating mechanism's impact better, can also increase the forward thrust of rubble portion, makes rubble efficiency higher.

In some embodiments of the above-described flexible impact lithotripsy device, the end of the lithotripsy portion is tapered, which is more likely to fragment stones when impacting stones, thereby improving lithotripsy efficiency, alleviating patient pain, and shortening procedure time.

In some embodiments of the above flexible impact lithotripsy device, a guide tube is disposed at a distal end of the flexible tube, a guide groove is disposed in the guide tube, a guide block is disposed on the lithotripsy portion, and the guide block is movably disposed in the guide groove for limiting. The movement of the gravel part is limited, so that the gravel part cannot move when moving, and the accuracy and the safety of the gravel are ensured.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the described figures are only some embodiments of the utility model, not all embodiments, and other designs and figures can be obtained by those skilled in the art without inventive effort, based on these figures:

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

figure 2 is a cross-sectional view of the distal end of a first embodiment of a flexible tube according to the present invention.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed or removable connections or integral connections; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 2, a flexible impact stone breaking device is disclosed, including flexible tube 1, the near-end of flexible tube 1 is fixed with actuating mechanism, and the distal end of flexible tube 1 is provided with rubble portion 3, and actuating mechanism's cable passes and is connected with control switch from flexible tube 1, and actuating mechanism's output is connected with flexible transmission shaft 2, the distal end of flexible transmission shaft 2 with rubble portion 3 is connected, and rubble portion 3 is the straight reciprocating motion towards the extending direction of flexible tube 1. The proximal end is the end close to the operator holding the device for use, and the distal end is the end far from the operator holding the device.

The flexible tube 1 can be bent and can be directly inserted into a guide sheath or a working channel of an endoscope, minimally invasive ballistic impact lithotripsy can be realized, wounds of patients can be greatly reduced, infection risks are reduced, and operation safety is improved. And the bent flexible tube 1 can enter the corners of the intestines and stomach or the renal pelvis to perform stone crushing on various kinds of stones in the corners, so that the stone crushing effect is better. The driving mechanism is arranged at the rear, the power of the driving mechanism is transmitted by the flexible transmission shaft 2, the size of the far end of the flexible pipe 1 can be reduced, and the flexible pipe can be more conveniently inserted into a small-size working channel.

In the first embodiment, a housing is arranged at the proximal end of the flexible tube 1, the driving mechanism is arranged in the housing, the driving mechanism comprises a linear motor, the output end of the linear motor is connected with a flexible transmission shaft 2, and the flexible tube 1 is sleeved outside the flexible transmission shaft 2. The linear motor can automatically carry out reciprocating impact, the technology is mature, the miniaturization can be realized, the size of the stone breaking device is greatly reduced, the frequency of the linear motor is high, the impact efficiency is high, and the stone can be quickly broken. The flexible transmission shaft 2 is a spool capable of transmitting impact, and the flexible transmission shaft 2 has a rigid characteristic so as to transmit the impact of the linear motor to the distal end of the flexible tube 1 and has a certain bending or bending capability while maintaining the impact energy transmission capability.

The flexible drive shaft 2 has flexibility and the ability to transmit the kinetic energy of crushed stone along a non-linear path, the flexible drive shaft 2 may be made in part or in whole of a closed coil spring, a round or flat wire or some variation therebetween, the flexible drive shaft 2 may also be made of other materials including, but not limited to, memory alloys, nickel titanium, stainless steel or other materials known in the art. The distal end of the flexible transmission shaft 2 may be of a different material than the shaft body or may be treated differently, for example by being locally hardened, than the rest of the shaft body, to be more resistant to stones and wear.

The distal end of flexible transmission shaft 2 sets up to rubble portion 3, rubble portion 3 and flexible transmission shaft 2 are as an organic whole, 3 during operation of rubble portion stretch out and retract from the end of flexible tube 1 and carry out reciprocal linear motion, the tip of rubble portion 3 sets up to the toper, and sharper pointed end lets the calculus more easily cracked when the striking to improve rubble efficiency and shorten the operating time, alleviate the misery of patient's operation.

The flexible pipe comprises a flexible pipe 1 and is characterized in that a guide pipe 8 is fixed in the far end of the flexible pipe 1, a guide groove is formed in the inner wall of the guide pipe 8, a guide block is arranged on the outer wall of the gravel part 3, and the guide block is clamped into the guide groove for assembly to limit the movement of the gravel part 3. The guide way is the straight flute, guarantees that rubble portion 3 can not rotate or skew when the motion, and the position of rubble portion 3 is located the center of flexible tube 1 all the time, and the direction of motion of rubble portion 3 is perpendicular with flexible tube 1 distal end terminal surface all the time to the accuracy and the security of rubble action have been ensured.

In addition still be provided with elastic component 4 in flexible tube 1, the one end of elastic component 4 is fixed the lower extreme of guide tube 8, the other end is fixed on rubble portion 3, when rubble portion 3 is out of work elastic component 4 is in tensile state, and elastic component 4 makes rubble portion 3 have the trend to the distal end motion of flexible tube 1 for flexible transmission shaft 2 keeps the tensioning, transmits actuating mechanism's impact energy better, has still increased elastic pulling force for flexible transmission shaft 2, has increased the forward thrust of rubble portion 3, makes the rubble efficiency higher.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.

Claims (4)

1. A flexible impact stone breaking device is characterized in that: including flexible pipe (1), the near-end of flexible pipe (1) is fixed with actuating mechanism, and the distal end of flexible pipe (1) is provided with rubble portion (3), and actuating mechanism's cable passes and is connected with control switch from flexible pipe (1), and actuating mechanism's output is connected with flexible transmission shaft (2), actuating mechanism includes linear electric motor, flexible transmission shaft (2) are the spool that can transmit the impact, the distal end of flexible transmission shaft (2) with rubble portion (3) are connected, and straight reciprocating motion is towards the extending direction of flexible pipe (1) to rubble portion (3).

2. The flexible percussive rock breaking apparatus according to claim 1, wherein: be provided with elastic component (4) in flexible tube (1), elastic component (4) are located the distal end of flexible tube (1), and rubble portion (3) is connected with elastic component (4), and elastic component (4) make rubble portion (3) have the trend to flexible tube (1) distal end motion.

3. The flexible percussive rock breaking apparatus according to claim 1, wherein: the end part of the gravel part (3) is arranged to be conical.

4. The flexible percussive rock breaking apparatus according to claim 1, wherein: the flexible pipe is characterized in that a guide pipe (8) is arranged at the far end of the flexible pipe (1), a guide groove (10) is formed in the guide pipe (8), a guide block (11) is arranged on the gravel part (3), and the guide block (11) is movably arranged in the guide groove (10) for limiting.

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