Motor output shaft automatic calibration system and stapler

Abstract

The present invention provides an automatic calibration system for a motor output shaft and an anastomosis device. The automatic calibration system for a motor output shaft comprises: a motor, comprising an output shaft and a motor sleeve sleeved on the output shaft, one end of the motor sleeve being provided with a first jack for inserting the output shaft; a docking piece, adapted to the motor sleeve, being provided with a docking hole for inserting the motor sleeve, and a pin extending from the docking piece, the pin being configured to be elastically retractable; the other end of the motor sleeve being provided with a second jack, a first calibration piece and a second calibration piece being provided on both sides of the second jack along the radial direction of the motor sleeve, when the motor sleeve rotates with the output shaft until the motor sleeve is inserted into the docking hole and the pin is inserted into the second jack, the pin, the first calibration piece and the second calibration piece abut against each other and are in conduction. Compared with the prior art, the present invention can automatically and accurately detect the alignment relationship between the motor sleeve and the docking piece, saving installation time and installation cost.

Description

Technical Field

[0001] The invention relates to an automatic calibration system for a motor output shaft and an anastomosis device using the automatic calibration system, belonging to the field of medical equipment. Background Art

[0002] Staplers are medical devices that replace manual suturing. Their main working principle is to use titanium nails to separate or staple tissues, similar to staplers. According to different application scopes, they are mainly divided into skin staplers, digestive tract (esophagus, gastrointestinal, etc.) circular staplers, rectal staplers, circular hemorrhoid staplers, circumcision staplers, vascular staplers, hernia staplers, lung cutting staplers, etc.

[0003] In the existing electric stapler, the controller usually controls the motor to start after receiving the signal to start the firing drive mechanism, and the motor drives the drive mechanism to operate, driving the cutting knife to move forward to cut human tissue. However, when the motor and the drive mechanism are assembled and docked, it is easy to cause the motor to be retracted and re-docking due to improper docking, which makes the assembly between the motor and the drive mechanism complicated, resulting in an increase in installation time and cost.

[0004] In view of this, it is indeed necessary to improve the existing stapler to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an automatic calibration system for a motor output shaft and an anastomosis device using the automatic calibration system. The automatic calibration system can accurately detect whether the motor shaft sleeve and the docking piece are properly docked, saving installation time and installation costs.

[0006] To achieve the above object, the present invention provides a motor output shaft automatic calibration system, comprising:

[0007] The motor comprises an output shaft and a motor sleeve sleeved on the output shaft, wherein one end of the motor sleeve is provided with a first plug hole for inserting the output shaft;

[0008] A docking piece, adapted to the motor sleeve, provided with a docking hole for the motor sleeve to be inserted, and a pin extending from the docking piece, wherein the pin is configured to be elastically retractable;

[0009] Among them, the other end of the motor sleeve is provided with a second socket for inserting the pin, and a first calibration piece and a second calibration piece are arranged on both sides of the second socket along the radial direction of the motor sleeve. When the motor sleeve rotates following the output shaft so that the motor sleeve is inserted into the docking hole and the pin is inserted into the second socket, the pin, the first calibration piece and the second calibration piece abut against each other and are conductive.

[0010] As a further improvement of the present invention, the first calibration piece and the second calibration piece have a first state and a second state. In the first state, the pin is not inserted into the second socket, and there is a gap between the first calibration piece and the second calibration piece. In the second state, the pin is inserted into the second socket, and the pin is clamped between the first calibration piece and the second calibration piece.

[0011] As a further improvement of the present invention, both the first calibration piece and the second calibration piece are elastic conductive pieces, and in the first state, both the first calibration piece and the second calibration piece partially extend into the second insertion hole.

[0012] As a further improvement of the present invention, the motor output shaft automatic calibration system also includes a control unit connected to the motor, and the ends of the first calibration piece and the second calibration piece are connected to signal transmission lines, and the signal transmission lines are connected to the control unit to transmit signals to the control unit, and the control unit controls the motor to rotate or stop.

[0013] As a further improvement of the present invention, when the first calibration piece and the second calibration piece are in a first state, the signal transmission line transmits a high level to the control unit, and the control unit controls the motor to continue rotating; when the first calibration piece and the second calibration piece are in a second state, the signal transmission line transmits a low level to the control unit, and the control unit controls the motor to stop rotating.

[0014] As a further improvement of the present invention, the docking member is further provided with a receiving groove for receiving the pin and an elastic member received in the receiving groove, and the pin is received in the receiving groove and connected to the elastic member.

[0015] As a further improvement of the present invention, the cross-section of the motor sleeve along its radial direction is hexagonal, and the cross-section of the docking hole along its radial direction is also correspondingly hexagonal.

[0016] As a further improvement of the present invention, the docking piece is also provided with a connecting column protruding into the docking hole, and a receiving cavity for accommodating the connecting column is correspondingly provided in the motor sleeve, the pin protrudes from the connecting column, and the receiving cavity is connected to the second socket.

[0017] To achieve the above-mentioned purpose, the present invention also provides a stapler, including the aforementioned motor output shaft automatic calibration system.

[0018] As a further improvement of the present invention, the anastomosis device also includes a screw rod, and a connecting hole is provided at the end of the docking piece facing away from the docking hole. The screw rod is assembled in the connecting hole to drive the screw rod to rotate synchronously after the motor sleeve is inserted into the docking hole and the pin is inserted into the second insertion hole.

[0019] The beneficial effect of the present invention is that the present invention provides an elastically retractable pin on the docking piece, and provides a second plug hole for the pin to be inserted and a first calibration piece and a second calibration piece respectively arranged on both sides of the second plug hole on the motor sleeve, so that when the motor sleeve and the docking piece are aligned, the pin can be inserted into the second plug hole and abutted and connected with the first calibration piece and the second calibration piece to determine whether the motor sleeve and the docking piece are docked in place. Compared with the prior art, the automatic calibration system of the present invention can automatically and accurately detect the alignment relationship between the motor sleeve and the docking piece, saving installation time and installation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the stapler of the present invention.

[0021] Figure 2 yes Figure 1 Schematic diagram of part of the structure.

[0022] Figure 3 yes Figure 2 Schematic diagram of the structure in which the middle screw rod, the docking piece and the motor sleeve cooperate with each other.

[0023] Figure 4 yes Figure 3 Exploded diagram of .

[0024] Figure 5 yes Figure 4 Another angle stereogram of the middle docking piece.

[0025] Figure 6 yes Figure 4 Exploded view of the docking parts.

[0026] Figure 7 yes Figure 4 Three-dimensional view of the motor sleeve.

[0027] Figure 8 yes Figure 7 Another perspective view of the motor sleeve shown.

[0028] Fig. 9 yes Figure 3 Cross-sectional view of the motor sleeve and the mating parts when they are matched.

[0029] Fig.10 yes Figure 3 Schematic diagram of the motor shaft sleeve and the docking piece when they are not aligned.

[0030] Fig.11 yes Figure 3 Schematic diagram of the motor shaft sleeve and the docking part after alignment.

[0031] Fig.12This is the circuit schematic of the control unit.

[0032] Fig.13 It is a circuit diagram of another embodiment of a control unit. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1 and Figure 2 As shown, the present invention discloses a stapler 100, comprising a main body 1 and a gripping portion 2 perpendicular to the main body 1, wherein the main body 1 contains a motor output shaft automatic calibration system 10 and a screw 3 connected to the motor output shaft automatic calibration system 10, wherein the screw 3 can rotate synchronously driven by a motor (not shown) after the motor output shaft automatic calibration system 10 completes the calibration work. Optionally, the stapler 100 is preferably a long stapler, wherein the motors are provided with two types, one large and one small, which are independent of each other, and each motor is equipped with the motor output shaft automatic calibration system 10 for automatic calibration and alignment.

[0035] like Figures 3 to 9 As shown, the motor output shaft automatic calibration system 10 includes a motor and a docking member 12, wherein the motor includes an output shaft and a motor sleeve 11 sleeved on the output shaft, and one end of the motor sleeve 11 is provided with a first plug hole 111 for inserting the output shaft. The docking member 12 is adapted to the motor sleeve 11, and is provided with a docking hole 121 for inserting the motor sleeve 11, and a pin 122 extending from the docking member 12, wherein the pin 122 is configured as a metal part and is elastically retractable. The other end of the motor sleeve 11 is provided with a second plug hole 112 for inserting the pin 122, a first receiving hole 113 and a second receiving hole 114 respectively provided on both sides of the second plug hole 112 along the radial direction of the motor sleeve 11, and a first calibration member 115 received in the first receiving hole 113 and a second calibration member 116 received in the second receiving hole 114.

[0036] When the motor sleeve 11 rotates along with the output shaft until the motor sleeve 11 is inserted into the docking hole 121 and the pin 122 is inserted into the second insertion hole 112, the pin 122, the first calibration member 115 and the second calibration member 116 abut against each other and are connected, and it can be determined that the motor sleeve 11 and the docking member 12 are docked. The end of the docking member 12 facing away from the docking hole 121 is provided with a connecting hole 123, and the screw rod 3 is assembled in the connecting hole 123, so that after the motor sleeve 11 is inserted into the docking hole 121 and the pin 122 is inserted into the second insertion hole 112, the motor drives the screw rod 3 to rotate synchronously.

[0037] Combination Fig.10 and Fig.11 As shown, the first calibration member 115 and the second calibration member 116 have a first state and a second state. In the first state, the pin 122 is not inserted into the second insertion hole 112, and there is a gap between the first calibration member 115 and the second calibration member 116. In the second state, the pin 122 is inserted into the second insertion hole 112, and the pin 122 is clamped between the first calibration member 115 and the second calibration member 116. Preferably, the first calibration member 115 and the second calibration member 116 are both elastic conductive members, and in the first state, the first calibration member 115 and the second calibration member 116 can be configured to partially extend into the second insertion hole 112. In this way, when the pin 122 is inserted into the second socket 112, the first calibration piece 115 and the second calibration piece 116 will be squeezed toward both sides, so that the first calibration piece 115 is partially retracted into the first receiving hole 113 and the second calibration piece 116 is partially retracted into the second receiving hole 114. At this time, the pin 122 is clamped by the first calibration piece 115 and the second calibration piece 116, ensuring a stable electrical connection between the pin 122, the first calibration piece 115 and the second calibration piece 116.

[0038] Of course, in other embodiments, the first calibration member 115 and the second calibration member 116 may also be configured to be non-elastic, as long as a stable connection between the pin 122, the first calibration member 115 and the second calibration member 116 can be ensured, and no limitation is made here.

[0039] The docking member 12 is further provided with a receiving groove 124 for receiving the pin 122 and an elastic member 125 received in the receiving groove 124. The pin 122 is received in the receiving groove 124 and connected to the elastic member 125. Specifically, the elastic member 125 is preferably a spring, and one end of the spring is fixedly connected to the inner wall surface of the receiving groove 124, and the other end is fixedly connected to the pin 122. The other end of the pin 122 extends beyond the receiving groove 124 and can be retracted toward the inside of the receiving groove 124 when squeezed by an external force, so that the spring is compressed.

[0040] The docking member 12 is also provided with a connecting column 126 protruding into the docking hole 121, and the pin 122 protrudes from the connecting column 126. A corresponding receiving cavity 117 for receiving the connecting column 126 is provided in the motor sleeve 11, and the receiving cavity 117 is communicated with the second plug hole 112. Specifically, the connecting column 126 is provided at the center of the docking member 12 and extends along the axial direction of the docking member 12. The docking hole 121 is arranged around the outer periphery of the connecting column 126. The receiving groove 124 is arranged at the outer peripheral edge of the connecting column 126, and there is only one receiving groove 124. In this way, automatic alignment and calibration can be achieved by plugging the pin 122 into the second plug hole 112. The receiving cavity 117, the second plug hole 112 and the first plug hole 111 also extend along the axial direction of the motor sleeve 11. The connecting hole 123 is disposed at the center of the end of the docking member 12 away from the docking hole 121 , so as to drive the screw rod 3 to rotate stably.

[0041] In this embodiment, the cross section of the motor sleeve 11 along its radial direction is a hexagon, and the cross section of the docking hole 121 along its radial direction is also a hexagon, so as to ensure that the motor sleeve 11 is stably connected to the docking member 12. Of course, in other embodiments, the cross sections of the motor sleeve 11 and the corresponding docking hole 121 can also be other shapes, as long as they can ensure that the motor sleeve 11 is stably connected to the docking member 12, and there is no limitation here.

[0042] like Fig. 9 As shown, the motor output shaft automatic calibration system 10 also includes a control unit connected to the motor, and the ends of the first calibration piece 115 and the second calibration piece 116 are both connected to a signal transmission line 13, and the signal transmission line 13 passes through the motor sleeve 11 and is connected to the control unit to transmit a signal to the control unit, and the control unit controls the motor to rotate or stop. Specifically, in combination with Fig.10 As shown, when the first calibration member 115 and the second calibration member 116 are in the first state, the signal transmission line 13 transmits a high level to the control unit, and the control unit controls the motor to continue rotating; Fig.11 As shown, when the first calibration member 115 and the second calibration member 116 are in the second state, the signal transmission line 13 transmits a low level to the control unit, and the control unit controls the motor to stop rotating.

[0043] In simple terms, the pin 122 and the second jack 112 are both made of metal conductive low-resistivity materials. When the pin 122 is electrically connected to the first calibration piece 115 and the second calibration piece 116, the level on the signal transmission line 13 will be pulled down to a low level state, and the control unit controls the motor to stop rotating, thereby recognizing that the calibration action is completed. When the pin 122 is not inserted into the second jack 112, the level on the signal transmission line 13 is a high level state, and the control unit controls the motor to continue rotating until the pin 122 is inserted into the second jack 112.

[0044] Since the high / low level state received by the control unit is output by the signal transmission line 13, it may cause damage to the control unit under certain circumstances, such as static electricity, high-frequency interference, etc., so it is necessary to perform signal isolation and anti-interference processing on the signal detection interface on the control unit.

[0045] like Fig.12 As shown, it is a signal detection circuit for anti-interference and isolation processing of the signal detection interface on the control unit. Among them, Cali_Raw connects two signal transmission lines 13, performs ESD protection processing through two bidirectional diodes E3, and then isolates the signal through diode D3 to prevent external abnormal signals from affecting the control unit. In addition, diode D3 can also play an ESD protection role. For example: when Cali_Raw does not input a low level, diode D3 is cut off, Cali_Signal will be clamped to 5V. Since the current limiting resistor R23 is large enough, the leakage current generated to the control unit can be ignored; when Cali_Raw inputs a low level, diode D3 is turned on, and Cali_Signal detects a low level, thereby generating a valid signal.

[0046] like Fig.13 As shown, it can also be Fig.12 Two more bidirectional diodes D7 are added on the basis of the above to play a clamping role. For example, when Cali_Raw does not input a low level, the diode D3 is cut off, and Cali_Signal will be clamped to 5V under the action of the two bidirectional diodes D7.

[0047] The following will briefly describe the working process of the automatic calibration system 10 of the motor output shaft of the present invention: when the control unit obtains the calibration instruction issued by the superior, it first controls the motor to start, and the motor pushes the motor sleeve 11 to run in a straight line in the direction of the docking piece 12. When the motor sleeve 11 and the docking piece 12 are securely combined, the pin 122 will align with the second jack 112 and pop out to make electrical contact with the first calibration piece 115 and the second calibration piece 116. At this time, a valid low level is generated on the signal transmission line 13, and then the control unit controls the motor to stop rotating and the calibration is completed. When the motor sleeve 11 and the docking piece 12 are not securely combined, the control unit controls the motor to continue rotating until the control unit detects a valid low-level signal, and the motor stops working to complete the calibration.

[0048] In summary, the present invention provides an elastically retractable pin 122 on the docking piece 12, and provides a second plug hole 112 for the pin 122 to be inserted, and a first calibration piece 115 and a second calibration piece 116 on both sides of the second plug hole 112 on the motor sleeve 11, so that when the motor sleeve 11 and the docking piece 12 are aligned, the pin 122 can be inserted into the second plug hole 112 to abut against and conduct the first calibration piece 115 and the second calibration piece 116 to determine whether the motor sleeve 11 and the docking piece 12 are docked. Compared with the prior art, the motor output shaft automatic calibration system 10 of the present invention can automatically and accurately detect the alignment relationship between the motor sleeve 11 and the docking piece 12, saving installation time and installation costs.

[0049] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A motor output shaft automatic calibration system, characterized in that: include: The motor comprises an output shaft and a motor sleeve sleeved on the output shaft, wherein one end of the motor sleeve is provided with a first plug hole for inserting the output shaft; A docking piece, adapted to the motor sleeve, provided with a docking hole for the motor sleeve to be inserted, and a pin extending from the docking piece, wherein the pin is configured to be elastically retractable; Among them, the other end of the motor sleeve is provided with a second socket for inserting the pin, and a first calibration piece and a second calibration piece are arranged on both sides of the second socket along the radial direction of the motor sleeve. When the motor sleeve rotates following the output shaft so that the motor sleeve is inserted into the docking hole and the pin is inserted into the second socket, the pin, the first calibration piece and the second calibration piece abut against each other and are conductive.

2. The motor output shaft automatic calibration system according to claim 1, characterized in that: The first calibration piece and the second calibration piece have a first state and a second state. In the first state, the pin is not inserted into the second insertion hole, and there is a gap between the first calibration piece and the second calibration piece. In the second state, the pin is inserted into the second insertion hole, and the pin is clamped between the first calibration piece and the second calibration piece.

3. The motor output shaft automatic calibration system according to claim 2, characterized in that: The first calibration piece and the second calibration piece are both elastic conductive pieces, and in a first state, the first calibration piece and the second calibration piece are both partially extended into the second insertion hole.

4. The motor output shaft automatic calibration system according to claim 2, characterized in that: The motor output shaft automatic calibration system also includes a control unit connected to the motor, and the ends of the first calibration piece and the second calibration piece are connected to signal transmission lines, and the signal transmission lines are connected to the control unit to transmit signals to the control unit, and the control unit controls the motor to rotate or stop.

5. The motor output shaft automatic calibration system according to claim 4, characterized in that: When the first calibration piece and the second calibration piece are in a first state, the signal transmission line transmits a high level to the control unit, and the control unit controls the motor to continue rotating; when the first calibration piece and the second calibration piece are in a second state, the signal transmission line transmits a low level to the control unit, and the control unit controls the motor to stop rotating.

6. The motor output shaft automatic calibration system according to claim 1, characterized in that: The docking member is further provided with a receiving groove for receiving the pin and an elastic member received in the receiving groove, and the pin is received in the receiving groove and connected to the elastic member.

7. The motor output shaft automatic calibration system according to claim 1, characterized in that: The cross section of the motor sleeve along its radial direction is a hexagon, and the cross section of the docking hole along its radial direction is also a hexagon correspondingly.

8. The motor output shaft automatic calibration system according to claim 1, characterized in that: The docking piece is also provided with a connecting column protruding into the docking hole, and a receiving cavity for accommodating the connecting column is correspondingly provided in the motor sleeve. The pin protrudes from the connecting column, and the receiving cavity is communicated with the second plug hole.

9. A stapler, characterized in that: A motor output shaft automatic calibration system comprising any one of claims 1-8.

10. The stapler according to claim 9, characterized in that: The stapler also includes a screw rod, and a connecting hole is provided at one end of the docking piece away from the docking hole. The screw rod is assembled in the connecting hole to drive the screw rod to rotate synchronously after the motor sleeve is inserted into the docking hole and the pin is inserted into the second insertion hole.

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